Affordable, efficient furnace replacement.

Need a new furnace? No sweat. Work with a trusted local pro and forget the phone tag, surprise costs, and other stress.

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Average homeowner savings
Stars on Google
Total installations
Metric tons of C02 saved

Replacing your furnace doesn’t have to be a nightmare. Here’s how we’re making things more efficient—for you and the planet.

Working with us is a breeze.

HVAC installation contractor company in Massachusetts for AC systems, furnaces, boilers and hot water heaters
Other contractors require constant management so they don’t disappear or go over budget.
We manage everything from estimate to installation. Tetra’s on top of the job so you don’t have to be.
Other contractors leave you feeling uncertain, taking weeks to respond, or ignoring you completely.
With Tetra, you get a team you can contact any time. We’ll never give you the cold shoulder.

Stress-free every step of the way

Answer a few questions and we’ll send you a detailed estimate right away.
Review your estimate virtually with a heating and cooling expert.
Choose your system and an installation date that works for you.
Answer the door on installation day. We’ll manage everything else.
“I had a ductless mini split installed.  Very professional, responsive, excellent quality, and exceptional price.  Half the costs of all other bids I got for the job.”
Jack O.
Springfield, MA
“I had a ductless mini split installed.  Very professional, responsive, excellent quality, and exceptional price.  Half the costs of all other bids I got for the job.”
Jack O.
Springfield, MA

No ghosting, guaranteed

Our trusted installers show up on time, do top-quality work, and don’t leave until you’re completely satisfied.

rectanglehvac installer

Boiler Installer in Plymouth

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Furnace installer in North Andover

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Mini split installer in Brockton

rectangleHVAC technician

Boiler specialist in Boston

rectangleHVAC Installer

Boiler Installer in Plymouth


Zero hidden fees

We lock in your price upfront so you know exactly what you'll pay on installation day—no surprises, no exceptions.

“I was skeptical at first when I saw the price, but there were no catches at all. Very high quality work and excellent customer service.”
Steve C.
Waltham, MA

You’ll never overpay.

Markups, sales fees, and other costs mean you pay more than you should.
We charge up to $4K less than others with wholesale pricing, exclusive discounts, and zero markups or extra fees.
Other contractors leave you to figure out financing on your own.
We’ll help you set up a payment plan that works for your budget.

High quality comes standard.

HVAC installers performing heating and cooling system replacement ordered online with Tetrarectangle
“Tetra’s crew was very respectful and did high-quality work during the gas boiler job. They left my house spotless, too.”
Hillary K.
Brockton, MA
Other contractors install lower-quality parts to save money, leading to costly fixes down the line.
We only install what we’d use in our own homes. Rest assured your system will last for years.
Other contractors cut corners to get the job done faster.
We firmly believe in done right, not done fast. We’re finished when you’re 100% happy.

Save money, save the planet

Installing an energy-efficient air conditioner can have a big impact on your monthly energy bill. Homeowners who opt for energy efficient models report savings of 25% or higher.

By choosing high-efficiency appliances, you're also doing your part to fight climate change. Replacing your old air conditioner is almost as effective as giving up your car!


Replacing your furnace really can be painless.

Ready to get started?

Frequently asked questions

When will you install my system?

We can install your system as soon as 7 days after you put down your deposit.

Who is doing the installation?

One of Tetra's fully vetted, top-quality installers will handle the job. We only work with the best local pros.

Will I be charged extra if something unexpected happens on installation day?

No. Our pricing is firm. We’ll confirm the cost of your project after your walkthrough and there will be no changes in price after that point—no matter what happens on installation day.

You haven’t been to my house. How do you know what I need?

We can make specific recommendations based on the information you provided and our experience installing hundreds of systems. Plus, the pre-installation walkthrough gives us an opportunity to confirm the recommendation.

How much does it cost to run the system on a monthly basis?

Monthly costs vary based on usage, the number of people in your household, and other factors. However, homeowners who install energy-efficient appliances report energy cost savings of 25% or higher.