Mini-Split System Installation & Replacement

Your Energy Efficient Heating & Cooling Solution… for one room or your entire home.

Forget about needing ductwork in order to have comfortable indoor air, no matter the season. Window units are a pain to take in and out (are ugly) and are electricity hogs. Central air is okay if you already have ductwork, but it can be in-efficient and leave you cooling / heating your entire house when you really only need to cool/heat the room you’re in. Enter ductless mini-split!

Wicked Efficient

Our mini-split systems provide “wicked” efficient cooling AND heating. Heating & cooling accounts for 49% of your utility bill. Our systems are so efficient, they save 24% on your utility bill… seriously!

Year-Round Energy

Our mini-split systems are heat pumps, meaning they can cool AND heat your home. Our standard models can provide you with supplemental heat. This means you still rely on your traditional heating system but take advantage of the heat pump in the fall and spring (saving you money on your oil/gas bill).

Our Low-Temp models provide full heating capabilities down to -15 degrees outside temperature. This means, if your home is the right application, you can use our mini-split heat pumps as your home’s sole heating system. I personally have this model installed in my home and have had clean and warm heat all winter long without relying on any form of backup heat.

Green & Clean

Mini-split heat pumps do not create heat (nor cool). They simply transfer the heat already in the air from one spot to another. This is the reason why they are so efficient. What’s my point? They use electricity to transfer this heat and electricity only. If you’re interested in a net-zero home or are concerned about your energy usage impact, you could look into adding solar. With solar installed on your home, you could power your mini-split heat pump with solar power! 

​Choose a professional for your solar installation and choose a heat-pump specialists for your mini-split system! As a mechanical contractor, we’ve been installing heat-pumps for well over 30 years and are truly mini-split professionals.

Zoning for EVERY Room

This is the beautiful feature of mini-split systems. Each indoor unit is controlled on it’s own with it’s own thermostat. What’s the big deal? Now instead of setting one temperature for your entire house, you can control each room! Think about turning on the light switch in only the room you use. That makes sense. What doesn’t make sense is if you had one light switch to turn on every single light in your house. This is the equivalent to having one thermostat in your house. 

​You also guessed it… zoning leads to even more energy savings too!

A Trustworthy NH Mini-Split Contractor

It’s important to choose a ductless system which is built and engineered to perform and last. However, it’s more important to have your system installed by a trained professional. Even if you purchase the most advanced system but have it installed by a company without experience and technicians that are factory trained, you’ll be running into problem after problem. Some manufacturers will even void your warranty if your system wasn’t installed by a certified contractor.

At GSMS you have nothing to worry about. Our technicians are industry trained and licensed to install your system not only properly, but safely as well. Especially when it comes to a job that involves working with refrigerants (such as R-410A and R-22), it’s important that the technician has a license to install. All of our technicians are fully licensed in the State of New Hampshire and hold their EPA Universal Certificates. We’re also proud to be a Mitsubishi Diamond Dealer.

You also want to hire a company that you can trust to not only provide you with a fair price, but provide you with the professional and honest service you and your home deserve. At GSMS, “Service is Our Speciality” and has been for over 35 years. We like to focus on creating a lasting relationship with our customers.