Southern New Hampshire’s Mitsubishi Mini Split Heat Pump Experts
Save Up to 40% on Heating & Cooling | Mitsubishi Ductless Mini-Splits
Elite Diamond Contractor certified – Established 2007.
Authorized Mitsubishi Elite Diamond Contractor – The Highest Level of Excellence.
Why Choose Mitsubishi Ductless Mini-Splits for Your Home?
A smarter, more efficient way to heat and cool your home — without ductwork.
Key Benefits:
- Save Up to 40% on Energy Costs
- Whisper-Quiet Comfort
- No Ductwork Required
- Year-Round Heating & Cooling
- Room-by-Room Zone Control
- Eco-Friendly Technology
Why Homeowners Choose Ductless Mini-Splits
Ductless mini-split systems deliver targeted comfort with less energy, less disruption, and greater control than traditional HVAC systems.
Ready for Smarter Home Comfort?
Schedule a Visit or Call/Text to learn if a Mitsubishi mini-split system is right for your home.
Customer Testimonials
Read: what our customers say about us!
EXCELLENTTrustindex verifies that the original source of the review is Google. Josh and Jim did an excellent job. From a walk thru to be sure we were clear on where everything would go to hard, diligent work checking and triple checking their work as they went. They were thoughtful to us and respectful of our home. Vacuuming and laying down protection on floors and taking all recycling and trash with them. The estimate was professional and insightful. They drove a long way for a three day installation. I would highly recommend Custom Climates.Posted onTrustindex verifies that the original source of the review is Google. Had a mini split system installed and it was a great experience. Less than a year later a part had failed (an issue with a special allergen filter I opted to add on not a part of the mini split. Mitsubishi system runs like a dream). Wesley came out same day after hours, diagnosed the issue, and had it fixed same day! Above and beyond doesn’t say enough about this company. I would recommend them for any and all HVAC installs and needs!Posted onTrustindex verifies that the original source of the review is Google. The guys did a great job! They walked me through any questions I had and worked with me on where things should go. I am very pleased with everything and would recommend them to all my friends.Posted onTrustindex verifies that the original source of the review is Google. Hello! We just had an Awesome experience with Josh and Jim from Custom Climates HVAC!! Their work is exceptional and they are very efficient and answered all our questions with ease. They are very courteous and a pleasure to work. We highly recommend Custom Climates HVACPosted onTrustindex verifies that the original source of the review is Google. Super happy. Well designed system, quick installation and turn around time.Posted onTrustindex verifies that the original source of the review is Google. The fellas that installed the two heating/cooling units did a FANTASTIC job. Personable and professional. All questions were answered, with a smile. I strongly recommend this company to everyonePosted onTrustindex verifies that the original source of the review is Google. Custom Climate HVAC is an amazing company. Great people to work with, from Steve who came to our house, and presented the options that were available for our home heating and cooling system. Steve provided us with all the information we needed to make our decision, without any pressure. Nick who came to our house and provided us with more information on how and where the heads and outside units would be installed. Then Nick coordinated and did the installation, while always keeping me informed on their progress. All the guys that came to our house to do their work were polite and courteous. They cleaned up after themselves and were very kind to our dogs. Margarita was very helpful with getting us started on the rebate, and answering any questions we had. All in all a great company to have your home HVAC system installed. Professional people with the experience and knowledge to get the work done. I definitely recommend Custom Climate HVAC. Thank you, Brian PaquetteVerified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Frequently Asked Questions
Great question! So basically, instead of having a huge furnace in your basement and ducts running through your walls, a ductless mini-split is just a small unit on your wall that heats or cools your room. It connects to a box outside your house with a little pipe—way less invasive than traditional HVAC. You can control each room separately, so if your bedroom is cold and your living room is hot, no problem.
Additionally, they’re whisper-quiet and can reduce your heating bill by 40% or more. Honestly, once you have one, you wonder why you didn’t get it sooner.
That’s the big question, right? Most folks save between 20-40% on their annual heating and cooling bills—some even more. It really depends on what system you’re coming from, how well your house is insulated, and how you like to heat and cool. A 2,000 square foot home that’s getting decent savings could be putting back $500-$1,500 a year in their pocket.
Add in state and federal rebates (and New Hampshire has some good ones), and the payback is pretty quick. Honestly, the best way to know YOUR number is to have our guys come out—it’s free, and they’ll show you exactly what you could save.
YES. This is probably the biggest question we get from New Hampshire homeowners, and I totally get it. You’ve heard that heat pumps don’t work in the cold—that’s outdated info. Mitsubishi’s newer systems (especially the ones we install) have what they call “Hyper-Heat” technology. These things deliver full heat even when it’s down to 5 degrees, and they keep working all the way down to -13.
We’re talking full capacity heating—not some sad little trickle. You won’t need a backup furnace unless you want one. We guarantee it’ll keep you warm through NH winters.
Nope, not at all. This is one of the best parts. Our crew comes out, installs a sleek unit on your wall (you pick where), then runs a couple small pipes (about the size of garden hoses) to an outdoor unit. They drill one small hole to run those pipes through. Takes 1-3 days depending on how many rooms you’re heating, and honestly, it’s way less disruptive than traditional HVAC.
Our guys are professional—they clean up after themselves, protect your floors, and you’re not living in a construction zone. Most folks are amazed how quick and clean it is.
We’ve got you covered—literally. We offer Mitsubishi’s industry-leading warranty: up to 12 years on labor. Yeah, you read that right. Twelve years on labor. That’s insane compared to what you get with most HVAC companies (usually 2-3 years if you’re lucky).
The catch? It has to be installed by certified Diamond technicians (which we are) and registered properly. We handle all that for you. We also offer extra protection plans if you want even more peace of mind. Basically, if something goes wrong, you’re covered.
You don’t have to do anything with your furnace. A lot of folks keep their old system and use the mini-split as their main heating/cooling. Some people use the mini-split in fall and spring, then switch back to the furnace in the dead of winter (even though they don’t need to). Others decommission the furnace and go all-in on the mini-split.
It’s totally your choice, and we’ll help you figure out what makes sense for your situation and budget. The flexibility is actually one of the best parts.
Not set-and-forget, but it’s way easier than a traditional furnace. We recommend a tune-up in spring to prep for summer cooling, and again in fall to get ready for winter. Takes about an hour, includes cleaning filters, checking the coolant, making sure everything’s running right.
Our maintenance plans are super affordable and include 24-hour support if something goes wrong. Honestly, a little TLC keeps your system running strong for 15+ years. Skip it, and you’ll lose efficiency and warranty coverage.
Great question, and I want to be straight with you—residential systems can’t actually heat and cool simultaneously like commercial equipment can. BUT here’s what they DO let you do: each zone (room) can have its own thermostat with independent temperature settings. So one person can set their bedroom to 72°F while someone else sets the living room to 68°F. Everyone gets their comfortable temperature without fighting over one thermostat. Plus, you’re not heating or cooling rooms nobody’s using—you only heat/cool the zones you want.
That’s the real game-changer for families. Single-zone is good if you’re just doing one room, but if you’ve got a bigger place with different temperature preferences in different areas, multi-zone is the way to go. We’ll help you figure out the best setup for your house.
Nah, they’re actually surprisingly quiet. The indoor units are super quiet—around 22-32 decibels, which is literally quieter than a normal conversation. You can watch TV, talk on the phone, sleep—no problem.
The outdoor unit is a bit louder (like 50-60 decibels) but still quieter than old AC units or heat pumps. Most people forget it’s even running. It’s one of the best parts—you get amazing heating and cooling without the noise pollution.
Our technicians went through Mitsubishi’s most rigorous training program—the ones that actually require showing up in person and proving you know your stuff. It’s not just an online certificate. Diamond Elite status means our crew knows exactly how to install, maintain, and optimize these systems to work perfectly for New England homes. It’s rare in NH, which means we’re among the best in the state.
You’re getting technicians who actually know what they’re doing, and that translates to better installation, better performance, and that full 12-year warranty protection.
Yes. 24/7. Even if it’s 2 AM on New Year’s Eve, we’re there. We know how important heat is in the winter here, and we take it seriously. Call us anytime, and we’ll get someone out to diagnose and fix it. Our guys carry parts, know how to troubleshoot fast, and we have the expertise to get you back up and running. Emergency service is just part of what we do.
Single-zone system? Usually 1-2 days. Multi-zone (a few rooms)? 2-3 days tops. Our team moves fast and works clean—not like those jobs where it feels like construction never ends. We’ll plan it out, tell you exactly what to expect, and finish efficiently.
Most folks are surprised how quick it actually is. We protect your furniture, lay down floor coverings, and clean up after ourselves. It’s professional, organized, and done before you know it.
Absolutely. You can control it from your phone from anywhere, set schedules, adjust temperature before you get home—all that good stuff. Most of our systems work with Google Home and Alexa too, so you can literally tell your house to adjust the temperature with your voice.
It’s 2026—your heating and cooling should be smart. We make sure everything’s connected right so you can take full advantage of it.
Great news—we partner with financing companies so you don’t have to pay it all upfront. You can get 0% interest for 25 months, low monthly payments, and still get warranty coverage. Costs vary depending on how many zones you want and your home size, but the financing options make it way more accessible than you might think. Plus, once you factor in the energy savings over a few years, most systems pay for themselves.
Come see us for a free quote—we’ll show you the numbers and talk through financing options that fit YOUR budget.
We don’t just sell you something and disappear. Our guys come out free, spend time understanding your home—how big it is, where the cold spots are, your insulation, what your actual needs and budget are. We’ll walk you through options without any pressure. We’ve installed 2,000+ systems in the area, so we’ve seen every kind of house situation.
We’ll tell you honestly what’ll work best for YOUR home, YOUR family, and YOUR budget. It’s a consultation, not a hard sell.
Popular Mitsubishi mini split models
Mitsubishi MSZ-FX Series
Key Specifications:
- Exceptional Energy Efficiency
MSZ-FX units feature advanced inverter-driven compressor technology with high SEER ratings, helping homeowners significantly reduce energy consumption and utility costs. - Hyper-Heating Performance
Designed to deliver reliable heating even in cold climates, the MSZ-FX series maintains strong heating capacity at low outdoor temperatures, making it suitable for year-round comfort. - Ultra-Quiet Operation
Engineered for whisper-quiet performance, MSZ-FX indoor units operate at sound levels as low as a quiet library, ensuring comfort without noise disruption.
Mitsubishi MLZ-KX Series
Key Specifications:
- Low-Profile, Space-Saving Design
The MLZ-KX ceiling cassette unit fits discreetly into drop ceilings or tight spaces while delivering powerful, even airflow—perfect for finished basements, offices, and living areas. - Customizable 4-Way Air Distribution
With a 4-way airflow pattern, this model spreads conditioned air evenly throughout the room for balanced comfort without hot or cold spots. - High Efficiency & Quiet Operation
Designed for year-round comfort with excellent SEER performance and whisper-quiet operation, the MLZ-KX keeps energy use low while maintaining a peaceful indoor environment.
Mitsubishi MXZ-3D24 Series
Key Specifications:
- Reliable All-Season Comfort
Engineered with advanced inverter technology and Hyper-Heating performance, the MXZ-3D24 delivers dependable heating and cooling — including strong heat output even in cold winter conditions. - High Efficiency & Energy Savings
With excellent SEER and HSPF ratings, this outdoor unit maximizes efficiency while minimizing electricity use, helping reduce monthly energy costs and environmental impact. - Quiet, Balanced Operation
Designed for quiet performance with optimized airflow and low noise levels, the MXZ-3D24 ensures comfortable indoor conditions without distracting sound — perfect for homes and living spaces.
Our Blog
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Ultimate Guide: Mitsubishi Ductless Heat Pumps for Epsom NH Homes (2026)
Ready to slash your Southern NH heating bills by 40% while staying comfortable through -13°F winters? Mitsubishi ductless heat pumps deliver hyper-heat performance that traditional systems can’t match. Why Epsom…
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How to Control the Humidity Level in Your Home
Controlling the humidity level in your home is crucial to maintaining comfort and air quality. If you’re feeling the moisture building up in your home, or perhaps feeling too dry,…
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Checklist for Maintaining a Furnace: Hints, Tips, and More
When the winter chill begins to set in, a well-maintained furnace becomes crucial for maintaining a warm and cozy environment. Proper maintenance not only ensures efficiency but also improves indoor…
