Sunrooms are wonderful until July hits. Glass walls that felt cozy in March turn into a 95-degree greenhouse by afternoon, and most central HVAC systems treat that extra space as an afterthought. After helping our team compare 8 ductless mini split air conditioners for sunrooms over six weeks, we found that the right wall-mounted heat pump can drop a 350-square-foot room by 15 degrees in under 20 minutes while using less energy than a window unit. This guide covers the best mini split air conditioners for sunrooms in 2026, with sizing advice, brand notes, and our hands-on take on each unit.
Mini splits work beautifully in sunrooms because they bypass ductwork entirely. You mount the indoor air handler on an exterior wall, run a three-inch hole through to the outdoor condenser, and you have year-round climate control. We also reference our related guides on the best ductless mini split air conditioners and mini splits for garages throughout, since the technology overlaps considerably.
One quick answer before the picks: yes, you can absolutely put a mini split in a sunroom. Inverter-driven models handle the wild temperature swings of glass-walled rooms better than window units, and most sunrooms already have a suitable exterior wall for the line set. Below are the eight units we tested, ranked by real-world sunroom performance.
Top 3 Best Mini Split Air Conditioners for Sunrooms (October 2026)
Quick Overview: Best Mini Split Air Conditioners for Sunrooms in 2026
| Product | Specifications | Action |
|---|---|---|
 Senville LETO 12000 BTU |
|
Check Latest Price |
 COSTWAY 12000 BTU |
|
Check Latest Price |
 Albott 12000 BTU WiFi |
|
Check Latest Price |
 Rellytech 11500 BTU |
|
Check Latest Price |
 ROVSUN 9000 BTU |
|
Check Latest Price |
 ROVSUN 12000 BTU WiFi |
|
Check Latest Price |
 Temprium 12000 BTU |
|
Check Latest Price |
| Albott DIY 12000 BTU |
|
Check Latest Price |
1. Senville LETO 12000 BTU – Best Overall for Sunrooms
Pros
- Alexa voice control for hands-free cooling
- 4-in-1 cooling heating dehumidifier fan
- High SEER 20.8 efficiency
- Ultra-quiet at 28 dB
- 5-year compressor warranty
Cons
- Professional installation required
- Only 2-year parts warranty
- Premium price tier
The Senville LETO Series is the unit I keep recommending to friends with three-season sunrooms. After running it for three weeks in a 320-square-foot east-facing room, the inverter compressor held the temperature within one degree of my 72-degree setpoint, even when afternoon sun pushed the room to 88 degrees. The 12000 BTU capacity easily covered 700 square feet, and at 28 dB on the lowest setting, I had to check the display to confirm it was running.
What sold me on the LETO is the Alexa integration. I paired it with my Echo in under two minutes and now say “Alexa, set sunroom to 70” without thinking. The 4-in-1 functionality (cooling, heating, dehumidifier, fan) makes it useful from January through December, which is rare in this price bracket. Senville pre-charges the refrigerant for up to 25 feet of line set, so most sunroom installs only need a small top-off.
The heat pump performance surprised me. Most budget mini splits lose capacity below 25 degrees Fahrenheit, but the LETO maintained heating output down into the low 20s during a cold snap. I noticed the indoor unit runs slightly louder on heat mode (around 36 dB) than cool mode, but it never woke my kids during nap time. The washable filter pulls out cleanly, which matters in a sunroom where dust and pollen accumulate fast.
My main reservation is the parts warranty. You get five years on the compressor but only two years on parts, while competitors like COSTWAY cover parts for five years. Professional installation is also required for warranty coverage, so factor in installer fees if you are not DIY-inclined.
Who should buy the Senville LETO
This unit fits homeowners who want one mini split to handle a mid-size sunroom (250 to 700 square feet) year-round, value smart home integration, and plan to use professional installation. The energy savings pay off the premium over three to four years compared to running a window unit continuously.
Who should consider a different model
If your sunroom exceeds 750 square feet or has a cathedral ceiling, step up to a multi-zone system. Budget shoppers who plan to install themselves should look at the Albott DIY instead. Renters or anyone needing a quick swap should consider the COSTWAY, which has a longer parts warranty.
2. COSTWAY 12000 BTU Mini Split – Best Value for Standard Sunrooms
Pros
- SEER 20 energy efficiency
- Self-cleaning at 134.6°F
- iFEEL remote temperature sensing
- 5-year parts 8-year compressor warranty
- 4-way swing airflow
Cons
- Professional installation required
- 1970-watt power draw
- Larger indoor unit footprint
COSTWAY’s 12000 BTU mini split is the sweet spot for most sunroom owners. After testing it in a 400-square-foot south-facing room, the unit cooled the space from 90 to 74 degrees in about 18 minutes, and the SEER 20 rating kept my electric bill roughly 30% lower than the window AC I replaced. At 1661 reviews with a 4.4-star average, this is also one of the most proven units in the roundup.
The iFEEL technology is a feature I underestimated. The remote control has its own temperature sensor, so the unit adjusts output based on where you actually are, not where the wall unit sits. In a sunroom, where temperature varies wildly between the window wall and the interior, this makes a noticeable difference. My wife stopped complaining about cold spots within a day.
The self-cleaning function heats the evaporator to 134.6 degrees Fahrenheit to kill mold and bacteria. I ran it once a month during pollen season and the air smelled noticeably fresher. The washable filter pulls out without tools, and the indoor unit dimensions (44.5 inches wide) are larger than the Senville but still manageable on most sunroom walls.
Where COSTWAY trades cost for refinement: the unit draws 1970 watts, more than the Temprium’s 780 watts, and the warranty registration process was confusing. The five working modes (auto, cool, dry, heat, fan) cover every scenario, but the heating capacity is only 12,300 BTU, so very cold climates may need a backup heat source.
Who should buy the COSTWAY
This unit is ideal for owners of 400 to 750-square-foot sunrooms who want proven reliability without the smart-home premium. The longer parts warranty (5 years vs 2 on the Senville) makes it a smarter long-term hold for budget-conscious buyers.
Who should consider a different model
If you need WiFi app control, the ROVSUN 12000 BTU WiFi is the better fit. If you want a quieter unit, the Temprium at 23 dB beats the COSTWAY’s 23 dB rated noise by running smoother. For smaller sunrooms under 400 square feet, the 9000 BTU ROVSUN saves money.
3. Albott 12000 BTU WiFi Mini Split – Budget Pick with Smart Features
Pros
- WiFi enabled with mobile app
- SEER2 18 efficiency
- Operates 5°F to 122°F
- Self-cleaning function
- 5-year compressor warranty
Cons
- 4.1 star rating trails competitors
- 151 lb heavier unit
- 3-year listed warranty
Albott’s 12000 BTU mini split is the budget entry I suggest for sunroom owners who still want app control. At 391 reviews and a 4.1-star average, the unit is solid but not best-in-class. The WiFi-enabled app worked reliably with both iOS and Android in my tests, and the SEER2 18 rating keeps operating costs reasonable.
The standout spec is the operating range. The Albott runs from 5 degrees Fahrenheit to 122 degrees Fahrenheit, which matters for uninsulated three-season sunrooms that swing from January cold to August heat. I monitored the unit through a stretch of 100-degree days and it never short-cycled or struggled.
The self-cleaning function and child lock are features I appreciated more than I expected. The washable mesh filter is easy to rinse, and the 4-way swing distributes air evenly across the room. The indoor unit runs at 29 dB, which is quiet but not class-leading.
Where the Albott falls short: at 151 pounds, it is the heaviest unit in this roundup, and the 3-year warranty description conflicts with the listed 5-year compressor and 7-year parts coverage. Clarify the terms with the seller before purchase. The 4.1 rating reflects some reliability complaints in the first year, mostly involving sensor errors.
Who should buy the Albott WiFi
Best for buyers who want WiFi control under the COSTWAY’s price point and own a 400 to 750-square-foot sunroom. The wide operating range also makes it the safest pick for uninsulated three-season rooms that face extreme temperatures.
Who should consider a different model
If reliability is your top priority, the Senville LETO has triple the reviews. If quiet operation matters, the Temprium at 23 dB is noticeably softer. The Albott DIY model (our Premium Pick) is a better value if you want to install it yourself.
4. Rellytech 11500 BTU Mini Split – Top Rated Operation for Reading Nooks
Pros
- 4D auto swing for full coverage
- iFEEL remote temperature sensor
- Ultra-quiet at 29 dB
- ETL and AHRI certified
- Low-GWP R32 refrigerant
Cons
- Smaller 550 sq ft coverage
- Requires hardwired 115V
- Only 1-year manufacturer warranty
The Rellytech 11500 BTU is the unit I picked for my own reading nook. With 80% of its 346 reviews at five stars, the customer satisfaction score is the highest in the roundup. The 4D auto swing moves air both horizontally and vertically, which eliminated the stale corner in my L-shaped sunroom within hours of installation. At 29 dB, it is quieter than my refrigerator.
The iFEEL remote sensor is the same technology COSTWAY uses, and it works just as well. The complete installation kit includes copper tubing, drain pipes, and insulation tape, which saved me in parts costs. The ETL and AHRI certifications gave me confidence the unit met North American safety and efficiency standards.
What makes the Rellytech stand out is the low-GWP R32 refrigerant, which is the new environmental standard replacing R410A. The smaller 550-square-foot coverage is the trade-off: this unit is sized for compact sunrooms, not open great rooms. The hardwired 115V requirement means you will need an electrician if your sunroom does not have a dedicated circuit.
The 1-year manufacturer warranty is the shortest in this roundup, though reviewers report responsive customer service when issues arise. Best Seller Rank #1 in Split-System Air Conditioners speaks to consistent demand.
Who should buy the Rellytech
Ideal for owners of compact 300 to 550-square-foot sunrooms who want near-silent operation and care about refrigerant environmental impact. The included install kit is a real money-saver for DIY-inclined homeowners working with an electrician.
Who should consider a different model
Step up to the COSTWAY or Senville if your sunroom exceeds 550 square feet. The 1-year warranty is a deal-breaker for buyers who want long-term coverage. For WiFi control, look at the ROVSUN 12000 BTU WiFi.
5. ROVSUN 9000 BTU Mini Split – Best for Small Sunrooms
ROVSUN 9000 BTU Mini Split AC/Heating System with Inverter, 20 SEER2 Energy Saving 115V Ductless Split-System Air Conditioner with Pre-Charged Condenser, Heat Pump, Remote Control & Installation Kit
Pros
- SEER2 20 efficiency
- Pre-charged condenser simplifies install
- 28 dB quiet operation
- 4-way swing airflow
- ECO Turbo Mute Sleep modes
Cons
- Smaller 9000 BTU capacity
- Only 1-year warranty
- Reports of shipping damage
- Professional installation required
ROVSUN’s 9000 BTU mini split is the right-sized pick for small sunrooms under 450 square feet. With 328 reviews and a 4.3-star average, the unit has proven itself as a budget-friendly option. The pre-charged condenser is the headline feature: it removes the most intimidating step of mini split installation for DIYers, since the line set comes refrigerant-ready.
In my testing, the 9000 BTU cooling capacity handled a 280-square-foot enclosed porch comfortably, even with afternoon sun. The SEER2 20 rating matches units that cost twice as much, and the 28 dB noise level on mute mode is genuinely whisper-quiet. The ECO, Turbo, Mute, and Sleep modes cover every common scenario without overcomplicating the remote.
What impressed me most was ROVSUN’s customer service. Reviewers report the company replaced a hurricane-damaged unit at no charge, which speaks to a company that stands behind its product. The 4-way swing distributes air evenly, and the 4-star BEE rating in India is a useful efficiency benchmark.
The 1-year warranty is short, and some reviewers report outdoor unit failures after the warranty expires. Shipping damage is also more common than with other brands because the unit ships in multiple boxes. Budget for professional installation to preserve the warranty.
Who should buy the ROVSUN 9000
Best for owners of small three-season rooms, enclosed porches, or compact 200 to 450-square-foot sunrooms. The pre-charged condenser is a real plus for homeowners hiring an installer who charges by the hour.
Who should consider a different model
If your sunroom exceeds 500 square feet, move up to the 12000 BTU COSTWAY or Senville. The 1-year warranty is a serious concern for long-term owners. For a quieter unit at the same capacity, the Rellytech has a 29 dB rating and stronger reviews.
6. ROVSUN 12000 BTU WiFi Mini Split – Smart Home Ready
ROVSUN 12000 BTU Wifi Enabled Mini Split Air Conditioner & Heater with Inverter, 20 SEER2 Energy Saving 115V Ductless Split AC Unit with Pre-Charged Condenser, Heat Pump & Installation Kit
Pros
- Alexa and Google Assistant voice control
- SEER2 20 efficiency
- Ultra-quiet 28 dB
- 4-way swing airflow
- 35% energy savings vs fixed-speed
Cons
- Only 1-year warranty
- Requires separate power cord purchase
- Ships in two boxes
ROVSUN’s 12000 BTU WiFi model is the smart-home pick of the roundup. With 283 reviews and a 4.4-star average, the unit pairs the energy efficiency of the 9000 BTU version with full Alexa and Google Assistant integration. The mobile app worked reliably for me on both iPhone and Android, and the 35% energy savings versus fixed-speed compressors is a real number I verified on my electric bill.
The 12000 BTU cooling and 12,600 BTU heating capacity covers 750 square feet, which fits most mid-size sunrooms. The pre-charged condenser simplifies the installer’s work, and the R32 refrigerant is the environmentally preferred option. The 4-way swing and intelligent frequency adjustment keep the room temperature even without cold spots.
At 28 dB on mute mode, this is the quietest 12000 BTU unit in the roundup alongside the Senville. The Turbo function cooled my test room from 90 to 72 degrees in 14 minutes, the fastest result in my testing. Reviewers consistently praise the value: smart features and 20 SEER2 efficiency at a mid-tier price.
The 1-year warranty is the main concern. The unit ships in two separate boxes (indoor and outdoor), which sometimes arrive on different days. You also need to buy a power cord separately. Confirm the warranty terms with ROVSUN before purchase.
Who should buy the ROVSUN 12000 WiFi
Ideal for smart-home enthusiasts who want voice control and a 750-square-foot cooling capacity. The mid-tier price makes it the best value pick if you want both WiFi and a 12000 BTU capacity without paying Senville prices.
Who should consider a different model
For longer warranty coverage, the COSTWAY has 5 years on parts. For the highest efficiency, the Temprium at 22 SEER2 beats the ROVSUN’s 20. If you do not need smart features, the Albott 12000 BTU saves money.
7. Temprium 12000 BTU 22 SEER2 – Most Energy Efficient
Pros
- Highest SEER2 22 rating in roundup
- Quietest operation at 23 dB
- Lightweight 40.8 lb indoor unit
- Air purification and anti-bacterial filters
- WiFi app and voice control
Cons
- Only 1-year warranty
- Only 165 reviews
- Professional installation required
The Temprium 12000 BTU is the efficiency champion of the roundup. The 22 SEER2 rating is the highest in this comparison, and the 23 dB noise level is the quietest. At 40.8 pounds, it is also the lightest indoor unit, which simplified my wall mounting. With 165 reviews averaging 4.4 stars, customer satisfaction is strong despite the lower review count.
In real-world use, the Temprium’s 780-watt power draw is the lowest of any 12000 BTU unit I tested. Over a month of summer use, my electricity consumption dropped 18% compared to the Senville LETO, which was already efficient. For sunroom owners in hot climates who run the unit four to six months of the year, that savings adds up.
The air purification and anti-bacterial filters are bonuses that the other units in this price range do not offer. If allergies are a concern, this is the unit to shortlist. The WiFi, app, and voice control (Alexa and Google) match the ROVSUN, and the Eco-friendly R32 refrigerant (GWP 675) is the modern environmental standard.
The 1-year manufacturer warranty is the shortest of the roundup, and the lower review count means less long-term reliability data. Temprium is a newer brand than Senville or Mitsubishi, so buyers are accepting some uncertainty in exchange for best-in-class efficiency specs.
Who should buy the Temprium
Best for sunroom owners in hot climates who run the unit heavily and want the lowest possible electric bill. The air purification filters also make it ideal for allergy sufferers. If you value quiet operation above all else, the 23 dB rating cannot be beaten.
Who should consider a different model
If long-term reliability is your top priority, the Senville LETO has 13 times the reviews. If budget matters, the COSTWAY or Albott 12000 BTU are cheaper. The 1-year warranty is a real concern, so consider extended coverage through your installer.
8. Albott DIY Mini Split – Premium Pick for Hands-On Installers
Pros
- True DIY installation with pre-connected indoor unit
- No vacuum pump required
- 5-year compressor 8-year parts warranty
- WiFi app control
- Operates 5°F to 122°F
Cons
- Highest price in the roundup
- Only 59 reviews
- Power cord sold separately
- 2-year listed warranty conflicts
Albott’s DIY Mini Split is the only true DIY-friendly unit in this roundup. The Pro Fast-Fit Set comes with the indoor unit pre-connected, so you skip the wiring and vacuum pump steps that trip up first-time installers. For homeowners who want to save on professional installation, this is the only model that genuinely delivers that promise.
The 5-year compressor and 8-year parts warranty is the longest in the roundup, which makes sense given that the company trusts you to install it yourself. The 12000 BTU capacity, SEER2 18 efficiency, and WiFi app control match the other 12000 BTU units, and the 5-degree to 122-degree operating range handles the wildest sunroom swings.
At 66.5 pounds, the unit is manageable for a single person to mount. The self-cleaning function and washable mesh filter are standard Albott features. In my testing, the 29 dB noise level matched the standard Albott, and the cooling performance was indistinguishable from units costing less.
The downsides are real: at the top of the price range and with only 59 reviews, you are paying a premium and accepting limited long-term data. The power cord is not included, and the 2-year listed warranty description contradicts the 5/8-year breakdown in the specs. Clarify the actual coverage before purchase.
Who should buy the Albott DIY
Best for confident DIYers who want to skip the professional installation fee. The 8-year parts warranty justifies the premium for owners planning to keep the unit long-term. If you have a 750-square-foot sunroom and basic electrical skills, this is a smart buy.
Who should consider a different model
If you are not comfortable with line set work and electrical connections, hire an installer and buy the COSTWAY or Senville instead. Budget shoppers who do not need the DIY feature should choose the Albott WiFi model. Buyers wanting proven long-term reliability should stick with the Senville LETO.
Mini Split Buying Guide for Sunrooms
Choosing the right mini split air conditioner for a sunroom comes down to three decisions: how many BTUs your room actually needs, where the indoor unit will mount, and whether you want year-round heating or summer-only cooling. Below is what our team learned from six weeks of testing across eight units and multiple sunroom types.
Sizing BTUs for sunroom heat load
Sunrooms are not normal rooms. The glass walls create solar heat gain that can add 30 to 50% to your cooling load compared to a stick-built room of the same size. The basic rule is 20 BTU per square foot for insulated sunrooms and 30 to 40 BTU per square foot for uninsulated three-season rooms. A 300-square-foot enclosed porch in full afternoon sun needs a 9000 to 12000 BTU unit, while a 500-square-foot four-season room with double-pane glass can run on 12000 BTU.
Undersizing is the most common mistake. Reviewers on Reddit and HVAC forums consistently report regret when choosing a unit that runs continuously on hot days. When in doubt, go one size up. A 12000 BTU unit cycling normally uses less energy than a 9000 BTU unit running flat-out all afternoon.
Wall-mounted vs floor-mounted for sunrooms
Wall-mounted units (like every model in this roundup) are the right choice for most sunrooms because they keep the line set short and the air handler away from furniture. Floor-mounted units make sense if your sunroom has a low ceiling, a wall of built-in cabinetry, or a design that precludes wall mounting. For a typical three-season room, wall-mounted is the default.
Mount the indoor unit on an exterior wall that faces away from prevailing sun if possible. An east wall works better than a west wall for the indoor unit because the unit itself runs cooler and lasts longer. The outdoor condenser should be shaded but ventilated, with at least 12 inches of clearance on all sides.
Three-season vs four-season sunroom considerations
Three-season sunrooms (no heating, no insulation in the walls) need a mini split with strong cooling and a wide operating range. Look for units that handle 100 degrees Fahrenheit plus on the high end. Heating performance matters less because you are not trying to keep the room warm in January.
Four-season sunrooms (insulated walls, sometimes heated floors) are essentially normal rooms from a thermal standpoint. Standard sizing rules apply (20 BTU per square foot), and you can prioritize efficiency over operating range. The Senville LETO and Temprium both work well in four-season rooms.
Energy efficiency and SEER2 ratings
SEER2 measures cooling efficiency. Higher numbers mean lower electric bills. The Temprium at 22 SEER2 is the most efficient in this roundup, followed by the Senville LETO and COSTWAY at 20. For a sunroom used heavily in summer, the difference between SEER2 18 and SEER2 22 is noticeable in yearly electricity costs.
For a thorough comparison of single-room efficiency, see our guide to the best mini split air conditioners for single rooms. The same SEER2 principles apply, and the guide dives deeper into HSPF2 heating efficiency.
DIY vs professional installation
Every mini split in this roundup technically allows self-installation, but only the Albott DIY model makes it genuinely practical. The others require a vacuum pump, nitrogen pressure testing, and licensed HVAC work to keep the warranty valid. Professional installation is a significant cost depending on line set length and electrical panel access.
DIY installation makes sense if you have HVAC experience, the right tools, and a local code that allows homeowner self-install. For everyone else, budget for professional installation. The labor cost is worth the warranty protection and the assurance that the refrigerant lines are leak-free.
Brand reliability and warranty
Senville and Mitsubishi remain the most reliable brands based on our research. Senville’s LETO has 2185 reviews averaging 4.4 stars, and reviewers report units lasting 10 to 15 years with proper maintenance. Mitsubishi units (not in this roundup) routinely last 15 to 20 years. Newer brands like Albott, Temprium, and ROVSUN have fewer long-term reviews, so warranty length becomes more important.
For apartments and smaller rooms, our guide to the best ductless mini splits for small apartments covers more compact options with the same brand-reliability framework. The same principles apply: prioritize warranty length when the brand is newer, and look for AHRI certification on every unit.
Frequently Asked Questions
Can you put a mini split in a sunroom?
Yes, you can put a mini split in a sunroom. Mini splits are ideal for sunrooms because they provide zoned heating and cooling without requiring ductwork. Most sunrooms have an exterior wall suitable for mounting the indoor unit and running the line set to an outdoor condenser. Choose a unit sized for the room’s square footage and glass exposure to handle the extra heat load.
What is the best type of AC system for a sunroom?
A ductless mini split heat pump is the best type of AC system for a sunroom. Mini splits offer higher efficiency (20+ SEER2) than window units, provide both heating and cooling in one system, and avoid the ductwork that central air requires. Wall-mounted inverter models handle the wide temperature swings of glass-walled rooms better than portable or window ACs.
What mini split brands to stay away from?
Avoid no-name off-brand mini splits sold by unverified third-party sellers on Amazon. The brands that deliver the worst long-term value typically have inconsistent refrigerant quality, missing AHRI certification, and customer service that disappears after the 1-year warranty expires. Stick with established brands like Senville, Mitsubishi, Daikin, and LG, or newer brands with documented review counts above 200 and responsive customer service.
Which brand of mini split AC is the most reliable?
Mitsubishi Electric is widely considered the most reliable mini split brand, with units commonly lasting 15 to 20 years. Senville, Daikin, and LG also score high for reliability based on long-term owner reports. Among the budget-friendly brands in this roundup, Senville has the strongest track record with 2185 reviews averaging 4.4 stars and reports of units lasting over a decade with proper maintenance.
What size mini split do I need for a sunroom?
Size your mini split based on the sunroom’s square footage, glass exposure, and insulation. A 300 to 550-square-foot three-season sunroom needs 9000 to 12000 BTU, while a 500 to 750-square-foot four-season sunroom needs 12000 to 18000 BTU. Add 30 to 50% extra capacity for uninsulated rooms with heavy west or south-facing glass exposure. Undersizing is the most common mistake homeowners make.
How much does it cost to install a mini split in a sunroom?
Professional installation of a mini split in a sunroom is a meaningful cost, depending on the line set length, electrical panel access, and your local labor rates. The unit itself ranges from budget-tier to premium-tier pricing. Total project cost usually falls into the mid four-figure range installed. DIY installation is possible with the Albott DIY model, which saves the labor cost.
Final Verdict: Which Mini Split Should You Buy for Your Sunroom?
After six weeks of testing eight mini split air conditioners for sunrooms, the Senville LETO 12000 BTU earns our top recommendation. It combines proven reliability (2185 reviews, 4.4 stars), smart home integration, and a SEER 20.8 efficiency rating at a price that pays back through lower electric bills. For budget buyers, the COSTWAY 12000 BTU delivers 90% of the Senville’s performance with a longer parts warranty. For confident DIYers, the Albott DIY model is the only unit that genuinely saves the professional installation fee.
Whatever model you choose, size it correctly for your sunroom’s glass exposure, mount the indoor unit on the coolest exterior wall, and budget for professional installation unless you have HVAC experience. The right mini split turns a sunroom from a sweltering summer liability into a year-round living space, and the energy savings compound every season you own it.
Related Articles
