The Best HVAC in Stratham, NH

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

#1

Seacoast Climate Control

4.8
(127 reviews)
Verified

A premier full-service HVAC contractor specializing in high-efficiency heating and cooling solutions for Stratham's harsh New England winters and humid summers. They are Carrier Factory Authorized Dealers and specialize in installing and maintaining systems that maximize energy savings and comfort.

85 Portsmouth Ave, Stratham, NH 03885

Specialties & Features

Energy Efficiency Upgrades
24/7 Emergency Service
High-Efficiency Furnace Installation
Geothermal Systems
Wi-Fi Thermostat Integration

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Granite State Heating & Cooling

4.6
(94 reviews)
Verified

A family-owned and operated HVAC provider with deep roots in the Stratham community. Known for reliable, honest service and expertise with all major brands, including Trane and Lennox. They offer comprehensive maintenance plans to keep systems running efficiently year-round, which is critical for the local climate's temperature swings.

12 Stratham Heights Rd, Stratham, NH 03885

Specialties & Features

HVAC Maintenance Plans
Heating System Repair
Ductwork Design and Sealing
Oil-to-Gas Conversion
Whole-Home Humidifiers

Business Information

Years in Business:22 years
Licensed:Yes
Insured:Yes
#3

First Call Mechanical

4.5
(88 reviews)
Verified

Specializes in fast, responsive residential HVAC service and installation. They are a go-to for emergency repairs, particularly during Stratham's cold snaps when furnace failures are critical. Their technicians are NATE-certified and EPA-certified, ensuring expert handling of refrigerants and complex system diagnostics.

3 Raymond Ave, Unit 4, Stratham, NH 03885

Specialties & Features

24/7 Emergency HVAC Repair
Air Conditioning Installation
Heat Pump Service
Indoor Air Quality Solutions
Commercial HVAC Services

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes

Why These Are the Top HVAC Contractors in Stratham

The HVAC market in Stratham, NH, is driven by a humid continental climate with cold, snowy winters and warm, humid summers. This creates a high demand for robust heating systems (especially high-efficiency furnaces and boilers) and reliable central air conditioning. Homeowners prioritize energy efficiency due to high heating oil and electricity costs, leading to strong demand for system upgrades, heat pumps, and comprehensive maintenance plans to ensure year-round comfort and system longevity. The market consists primarily of well-established local and regional contractors who understand the specific challenges of New England weather.

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 Stratham regulations and climate

Frequently Asked Questions About HVAC in Stratham

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

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

For a full high-efficiency AC system replacement in Stratham, including installation, homeowners can expect to pay between $5,000 and $12,000. The final cost depends heavily on the home's size, the system's SEER rating, and the complexity of the ductwork. Given our humid summers and the desire for efficiency, investing in a unit with a SEER rating of 16 or higher is common to manage long-term cooling costs effectively.

2When is the best time to schedule HVAC maintenance in Stratham, NH?

The ideal schedule is biannual: have your heating system serviced in late summer or early fall (before October) and your cooling system serviced in early spring (before June). This timing ensures your furnace is ready for our cold, snowy winters and your AC is prepared for humid summer heat, avoiding the peak-season rush when local HVAC companies are busiest with emergency breakdowns.

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

While New Hampshire has no statewide mechanical code for residential HVAC, Stratham may have local building permit requirements for new installations, so always check with the town. Importantly, you should explore rebates from New Hampshire's electric and gas utilities, like Eversource or Unitil, which often offer significant incentives for installing high-efficiency heat pumps, a popular choice for our climate as they provide both heating and cooling.

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

Look for a licensed, insured, and locally-established contractor with strong references in Stratham and surrounding towns. They should be familiar with our specific climate challenges, such as preparing systems for nor'easters and humidity. Always verify they are EPA-certified for refrigerant handling and check their reviews on platforms like Google or the Better Business Bureau for consistent, quality service.

5My heat pump seems inefficient during the coldest weeks in Stratham. Is this normal?

Yes, this is a common concern. Standard air-source heat pumps lose efficiency as temperatures drop below freezing, which is why they are often part of a dual-fuel or hybrid system paired with a backup furnace (like propane or oil) in our region. For optimal year-round comfort, many Stratham homeowners install cold-climate heat pump models specifically designed to operate efficiently in sub-freezing New Hampshire temperatures.