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Expert HVAC Services in Concord, NH
R A Desmarais & Son has dedicated itself to providing exceptional HVAC solutions for our community since our founding. Our team combines technical expertise with personalized service to address heating, cooling, and air quality needs. With specialized training in Rheem systems and Energy Star-certified equipment, we deliver reliable installations and repairs. We prioritize customer satisfaction through prompt emergency response, transparent pricing, and financing partnerships with NEIF. Our technicians maintain certifications in the latest HVAC technologies, ensuring energy-efficient solutions that meet evolving home comfort standards. By focusing on preventative maintenance and system optimization, we help customers reduce utility costs while extending equipment lifespan.

Our commitment to quality extends to comprehensive warranties on both parts and labor. As a locally owned business, we measure success through the trust of our neighbors and the long-term comfort of their homes. Our 24/7 availability and flexible payment options ensure accessibility for all budget considerations. Through EcoNet smart technology integration, we empower homeowners with remote system control. This combination of technical proficiency, community focus, and innovative solutions defines our approach to HVAC service excellence.
Services
Air Conditioning Gas Furnaces Heat Pumps Indoor Air Quality HVAC Repair System Maintenance Emergency Service Smart Thermostats Financing Options
Highlights and features
  • We have certified HVAC technicians with decades of combined experience
  • We specialize in Rheem systems with industry-leading warranties
  • 24/7 emergency service available for urgent heating/cooling needs
  • NEIF financing options for affordable payment plans
  • Locally owned with deep community service commitment
Services
Air Conditioning
Our AC repair and installation services ensure optimal cooling performance. We maintain and replace all major brands while specializing in energy-efficient Rheem systems. Our technicians perform comprehensive system diagnostics and maintenance to improve efficiency and extend equipment lifespan.
Gas Furnaces
Emergency furnace repair and replacement services for gas heating systems. We install high-efficiency Rheem furnaces with advanced features like induced-draft blowers and hot surface ignition. Our maintenance plans help prevent breakdowns and maximize system longevity.
Heat Pumps
Heat pump installation and repair services for year-round climate control. We provide SEER/HSPF-rated systems with Compliant Scroll Compressors for quiet operation. Our specialists optimize system performance for both heating and cooling efficiency.
Indoor Air Quality
Comprehensive IAQ solutions including HEPA air cleaners, humidifiers, and UV treatment systems. We address allergens, pollutants, and humidity issues through whole-home air purification systems integrated with HVAC equipment.
Emergency Service
Around-the-clock HVAC emergency response for urgent heating and cooling failures. Our technicians prioritize rapid diagnosis and repair to restore home comfort, with no additional fees for after-hours service.
Questions
What HVAC services do you offer?
We provide full-service HVAC solutions including AC/furnace repair, heat pump installation, indoor air quality systems, emergency service, and equipment maintenance.
Do you offer financing options?
Yes, we partner with NEIF Financing to provide affordable payment plans with no prepayment penalties for HVAC system upgrades.
Are you available for emergencies?
Our team offers 24/7 emergency HVAC service for urgent heating and cooling system failures.
What brands do you work with?
While specializing in Rheem systems, we service all major HVAC brands for repair and maintenance needs.
Do you serve areas outside Concord?
We primarily serve Concord and surrounding communities across Central New Hampshire.
How can I schedule service?
Contact us at 603-224-9505 or through our website contact form to schedule repairs, maintenance, or system consultations.