Compare the highest-rated hvac professionals in Grantham, New Hampshire. All contractors are licensed, insured, and verified through our rigorous screening process.
A premier full-service HVAC contractor specializing in high-efficiency heating and cooling systems for Grantham's harsh winters and humid summers. They are known for exceptional craftsmanship in system installation, complex ductwork design, and 24/7 emergency repair services. They are certified dealers for top brands like Trane and Mitsubishi.
A trusted local provider with deep expertise in servicing and replacing oil and propane furnaces, which are common in the region. They offer comprehensive maintenance plans to ensure system reliability throughout the long heating season and are specialists in air quality solutions and boiler service.
Specializes in modern, energy-efficient HVAC solutions, including advanced heat pump systems and geothermal options for environmentally conscious homeowners. They focus on reducing energy costs through proper system sizing, home energy audits, and upgrades, making them a go-to for newer homes and retrofits.
Grantham, NH, experiences a humid continental climate with cold, snowy winters (average lows in the teens) and warm, humid summers. This creates a high year-round demand for reliable HVAC services, with a strong emphasis on robust heating systems (furnaces, boilers, heat pumps) and increasing adoption of energy-efficient cooling. The local market is competitive among a small number of established, full-service providers who must be adept at handling older oil-based systems and installing modern, efficient alternatives. Emergency service capability during winter storms is a critical differentiator for local companies.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Grantham regulations and climate
Get answers to common questions about hvac services in Grantham, New Hampshire.
For routine maintenance, early fall (for heating) and late spring (for cooling) are ideal to ensure systems are ready for our intense seasons. For full system replacements, the shoulder seasons of spring and fall are best, as local HVAC companies are less overwhelmed than during the mid-winter heating crisis or peak summer humidity. Scheduling during these off-peak times in Grantham often leads to better availability and sometimes promotional pricing.
Grantham experiences cold, snowy winters with temperatures often dropping well below freezing, making system reliability and efficiency paramount. Homeowners should prioritize high-efficiency options like modulating gas furnaces or cold-climate heat pumps, which are now well-suited for New Hampshire winters. Proper sizing and installation for our specific heating degree days are critical to avoid high fuel costs and ensure consistent comfort.
Yes, while Grantham has no unique local codes beyond the state's building codes, New Hampshire offers significant incentives. The NHSaves program provides rebates for installing high-efficiency heat pumps, furnaces, and boilers, which can substantially offset costs. Always ensure your contractor pulls the required Town of Grantham building permit for installations, which ensures compliance and safety.
Prioritize local, licensed, and insured contractors familiar with Grantham's older homes and harsh weather challenges. Look for companies that are NATE-certified and have strong references from nearby towns like Springfield or Sunapee. A reputable provider will perform a detailed Manual J load calculation specific to your home's construction and our climate, not just recommend a unit based on square footage.
It's a common concern; standard air-source heat pumps can lose efficiency below 25°F, which we frequently experience. For Grantham homes, the solution is either a properly sized cold-climate heat pump (CCHP) model specifically rated for low temperatures or a hybrid (dual-fuel) system that pairs a heat pump with a gas or propane furnace as a backup. This setup maximizes efficiency for most of the year and provides reliable, cost-effective heat during our deepest cold snaps.