Top 7 HVAC companies in Hillsborough, New Hampshire

Hillsborough County sits in a heating-dominant climate with 6,800 heating degree days and winter design temperatures of -3 °F. Homeowners here rely heavily on fuel oil and propane systems, with growing interest in cold-climate heat pumps as retrofits. The data below rank seven local firms by Bayesian-adjusted star rating drawn from public listings collected in August 2026.

Climate in Hillsborough County

Hillsborough County falls in IECC zones 5A-6A, dominated by zone 6A with a moist regime. Manchester serves as the design city. Heating degree days reach 6,800 while cooling degree days total only 500, confirming a strongly heating-dominant load profile. Winter design temperature is -3 °F and summer design reaches 89 °F with dry winters. Primary heating fuels remain fuel oil and propane. Heat-pump suitability is rated fair and requires cold-climate units with backup. Central air-conditioning saturation stays low to moderate. Peak service demand occurs in winter. High fuel-oil dependence and rising mini-split interest shape equipment choices and sizing practices in this market.

The shortlist

Hill Top Heating

Hill Top Heating operates from 271 Deering Center Rd, Deering, NH 03244 and lists (603) 464-5311. Its Services category and 24/7 availability point to emergency heating and cooling work. Twenty-two reviews produced a raw 5.0 that the ranking adjusted downward to 4.864 against the 4.764 national mean. The modest review count still allowed the score to remain above the mean. These figures say nothing about actual workmanship or response times on any given job.

Comfort Air Services.

Comfort Air Services. lists a public website and 24/7 availability from 91 Sandown Rd, Fremont, NH 03044 at (603) 253-2120. Its Services category suggests focused HVAC work. Four reviews at raw 5.0 adjusted to 4.792. The small sample size produced a larger downward pull toward 4.764 than firms with more data. Review depth remains too thin to judge consistency.

HVAC Solutions 603 LLC

HVAC Solutions 603 LLC works from 98 Ashland St, Manchester, NH 03104 and can be reached at (603) 812-5542. Its General contractor listing and lack of 24/7 status indicate standard scheduling. Thirteen reviews at raw 5.0 adjusted to 4.835. The count was large enough to limit movement toward the 4.764 mean. Numbers alone reveal nothing about licensing status or insurance coverage.

Links Heating LLC

Links Heating LLC operates from 16 Symonds Rd, Hillsborough, NH 03244 and lists (603) 391-4185. Its General contractor category and public website are the only tie-breakers applied. Four reviews at raw 5.0 adjusted to 4.792. Limited reviews created the same downward adjustment seen with Comfort Air Services. The figures give no information on actual project outcomes.

Pipe Pro Plumbing & Heating

Pipe Pro Plumbing & Heating is located at 47 Mary Rowe Dr, Hillsborough, NH 03244 and answers at (603) 464-4543. Its Plumber category suggests combined plumbing and heating work. Eighteen reviews produced a raw 4.5 that adjusted upward to 4.665. The score sat below the 4.764 mean, so additional reviews moved it closer. These ratings do not address permit compliance history.

Wheeler Plumbing & Heating

Wheeler Plumbing & Heating lists 494 Stowe Mountain Rd, Hillsborough, NH 03244 and (603) 478-5680. Its Plumber category indicates mixed plumbing and heating services. Eleven reviews at raw 3.9 adjusted upward to 4.532. The larger gap to the national mean and moderate review count produced noticeable movement. The numbers supply no detail on equipment brands serviced.

AGS Services, Inc.

AGS Services, Inc. operates from 78 Depot Hill Rd, Henniker, NH 03242 and can be reached at (603) 428-7990. Its General contractor listing shows no 24/7 availability. Nineteen reviews at raw 3.6 adjusted upward to 4.313. The low raw score and solid review count produced the largest upward adjustment of the group. These figures cannot speak to response speed during peak winter months.

How to choose

Review volume matters more than raw stars because the Bayesian adjustment pulls small samples toward 4.764. Confirm any gas-fitting credentials directly with the OPLC board since no general HVAC license exists. Manufacturer training records become the primary quality signal. Verify 24/7 status only if emergency coverage is required.

System costs

Modeled typical full-system installation costs range from $9,700 to $11,900. Invoiced averages for 2025 reached $16,421, with the upper quartile at $23,877. Labor rates are listed at $130 per hour. Permit fees fall between $120 and $400. Both cost sources are presented because the invoiced figures sit well above the modeled range. The gap reflects real project variables such as existing ductwork, fuel type and access conditions. Homeowners should obtain multiple written quotes that itemize equipment, labor and permit fees separately.

Licensing and permits

New Hampshire maintains state-level licensing through the Office of Professional Licensure and Certification Board of Mechanical Safety and Licensing. No general HVAC license is issued. Only fuel-gas fitting carries state credentials across trainee, installation, service piping and related categories. General heating and cooling work without fuel-gas piping is unlicensed at the state level, although a voluntary oil-heating technician certification exists. Insurance requirements are not recorded in public data. Permits are required for most installations under the state-adopted mechanical code yet are issued and inspected locally. Towns such as Manchester and Nashua follow their own permitting processes without separate contractor licensing.

Available incentives

The NH Home Energy Rebates program, funded through DOE, is approved for launch in spring or summer 2026. Maximum heat-pump rebates reach $8,000, with low-income caps raised to $15,000 or $20,000. No state tax credit applies. Utility rebates through NHSaves range from $500 to $3,000 and require use of a participating contractor. Federal 25C and 25D credits expired at the end of 2025. Only commercial or third-party-owned systems retain 48E access. Because New Hampshire issues no HVAC license, homeowners must rely on NATE certification or factory training records when selecting an installer eligible for these rebates.

Public listing data alone cannot confirm workmanship, insurance status or recent code compliance. Homeowners should request references, verify current credentials with the OPLC board and obtain multiple itemized bids before committing funds.