The Best HVAC in Nashua, NH

Compare the highest-rated hvac professionals in Nashua, New Hampshire. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Granite State Climate Control

4.8
(142 reviews)
Verified

A full-service HVAC contractor specializing in high-efficiency heating and cooling systems tailored to New England's harsh climate. They are a Carrier Factory Authorized Dealer and excel in complex installations including geothermal and ductless mini-splits. Their team includes NATE-certified technicians and they offer comprehensive energy audits.

85 Northeastern Blvd, Nashua, NH 03062

Specialties & Features

High-Efficiency System Installation
Geothermal Systems
24/7 Emergency Service
NATE-Certified Technicians
Carrier Dealer

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#2

Nashua Furnace & Air Conditioning

4.6
(118 reviews)
Verified

A family-owned and operated HVAC provider with deep roots in the community. They are known for their exceptional repair and maintenance services, particularly for furnaces and boilers crucial for Nashua's cold winters. They are an authorized dealer for Lennox and Trane systems and prioritize clear communication and upfront pricing.

212 Main Dunstable Rd, Nashua, NH 03060

Specialties & Features

Furnace Repair & Installation
Boiler Services
Preventive Maintenance Plans
Lennox & Trane Dealer
Duct Cleaning

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes
#3

TrueTemp HVAC Services

4.5
(96 reviews)
Verified

Specializes in fast, reliable emergency repairs and system replacements for both residential and light commercial properties. They are highly rated for their responsiveness and expertise with heat pumps, a popular solution for New Hampshire's variable seasons. Their technicians are EPA-certified and highly trained in the latest diagnostic technology.

501 Amherst St, Nashua, NH 03063

Specialties & Features

24/7 Emergency Repairs
Heat Pump Installation & Service
Air Quality Solutions
Ductwork Design & Sealing
Commercial HVAC

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes

Why These Are the Top HVAC Contractors in Nashua

The Nashua HVAC market is driven by a climate with cold, snowy winters (avg. low 16°F in Jan) and warm, humid summers (avg. high 83°F in July), creating year-round demand for reliable heating and cooling. Homeowners prioritize energy efficiency due to high fuel costs, leading to strong demand for heat pumps, high-efficiency furnaces, and system upgrades. The market is competitive with numerous providers, but top-tier companies distinguish themselves with 24/7 emergency service, manufacturer certifications (e.g., Carrier, Lennox, Trane), and expertise in handling both modern and older heating systems common in New England homes.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Nashua regulations and climate

Frequently Asked Questions About HVAC in Nashua

Get answers to common questions about hvac services in Nashua, New Hampshire.

1What is the typical cost range for replacing a central air conditioning system in a Nashua home?

For a standard, single-family home in Nashua, a full AC replacement typically ranges from $5,000 to $12,000. This final cost depends heavily on the home's size, the system's efficiency (SEER rating), and the complexity of the installation, such as ductwork modifications. Given our humid summers and temperature swings, investing in a properly sized, high-efficiency unit (16+ SEER) is recommended for long-term comfort and energy savings.

2When is the best time to schedule HVAC maintenance or replacement in Nashua, NH?

The optimal times are during the shoulder seasons—late spring (April-May) for AC service and early fall (September-October) for furnace service. Scheduling during these periods ensures your system is ready for Nashua's harsh winters and humid summers and helps you avoid the high-demand rush and potential emergency fees. For replacements, planning ahead during these windows also provides more installer availability and potential off-season promotions.

3Are there any local New Hampshire regulations or rebates I should know about when upgrading my HVAC system?

Yes, always verify that your contractor is licensed by the New Hampshire Department of Safety (Plumbing & Mechanical License). For rebates, check with NHSaves.com, which offers cash incentives for upgrading to high-efficiency heat pumps, furnaces, and air conditioners. Additionally, Nashua residents should be aware of local permit requirements for major installations, which a reputable local contractor will handle.

4How do I choose a reliable HVAC contractor in the Nashua area?

Prioritize local, established companies with strong community reputations, verified licenses, and proper insurance. Look for technicians who are NATE-certified, as this indicates advanced competency. Always get 2-3 detailed written estimates, and check reviews specific to their service in Southern New Hampshire's climate, which demands expertise in handling both extreme cold and summer humidity.

5My furnace is old but working. Should I preemptively replace it before a Nashua winter?

This depends on the age, efficiency, and repair history of your unit. If your furnace is over 15 years old and has a history of repairs, a preemptive replacement before winter is wise to avoid a costly no-heat emergency during a cold snap. Modern, high-efficiency models (90%+ AFUE) will significantly lower your heating bills in our climate and provide more reliable comfort. A professional evaluation can assess its condition and remaining lifespan.