A Family-Owned & Operated HVAC Contractor You Can Trust
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A Family-Owned & Operated HVAC Contractor
You Can Trust
No Problems, Just Solutions

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Green HVAC

Many of our systems are ENERGY STAR qualified and may be eligible for federal and state tax credits or local utility rebates.


We actively participate in LEED certified projects

As a Mitsubishi Diamond Elite Dealer, All Systems We Sell Come Backed With a 12 Year Warranty

Finance Your Project

We offer financing options through the Credit for Comfort program.
Call us at 603-563-8305 if you have any questions.

K.E. Bergeron Truck

Furnace Replacement, HVAC Installation & Air Conditioner Repair
Swanzey, NH, Keene, NH & Chesterfield, NH

As a second generation family company, K. E. Bergeron Mechanical Systems, LLC provides superior value throughout Keene, NH and surrounding areas. You’ve probably seen our service trucks in your area. We handle the full range of industrial, commercial, and residential HVAC requirements, from new installation to upgrades, seasonal maintenance, and repair. For every job, we uphold uncompromising levels of professionalism and quality. We’re simply not satisfied unless you are.

Dependable Heating & Cooling Services From An Expert Team!

Contact us at 603-563-8305 for a prompt response. We take advantage of new digital dispatch software to avoid delays. Our team of EPA certified, Natural/LP gas licensed, highly trained and experienced technicians are prepared for any challenge across Keene, Swanzey, Chesterfield, Walpole, Peterborough, NH, and Southern Vermont. As a Mitsubishi Diamond Elite Dealer, we are leaders in ductless split design and implementation, and we specialize in Indoor Air Quality.

Give our team a call for all your HVAC repairs, maintenance & installations in Keene, Swanzey, Chesterfield, Walpole, Peterborough, NH, and Southern Vermont!

At K. E. Bergeron Mechanical Systems, LLC, we deliver exceptional return from your investment through a job done right. No corners get cut, no details overlooked. We obtain building permits for all work. Give us a call at 603-563-8305. No Problems, Just Solutions!

Furnace Replacement & Air Conditioning Repair in Peterborough, NH

HVAC InstallationHeating InstallationAC Service