Hiring HVAC Contractors in Nashua: Costs and Checks

Hillsborough in numbers

Public figures that affect what a job costs and how busy local businesses are.

• People per square mile2,998Source: Calculated from U.S. Census Bureau 2025 estimates and Gazetteer land area · 2025
• Land area30.8 sq miSource: U.S. Census Bureau, 2025 Gazetteer files · 2025
• Nashua residents92,435Source: U.S. Census Bureau, Vintage 2025 population estimates (sub-est2025) · July 1, 2025
• Population change since 2020+1.2%Source: U.S. Census Bureau, Vintage 2025 population estimates (sub-est2025) · 2020–2025 · from 91,335 (April 2020 base)

Figures from public sources. Rows tagged "Sample figure" show what our live public-data feeds will supply; they are illustrative, not real counts. Public records size the market and are not part of the score.

Questions to ask before you hire

1. Is your license active, and in this company's name? Check it yourself on the state licensing board's site.
2. Who pulls the permit, and is it in the price? It should be the business, and it should be in writing.
3. What is the payment schedule? Payments should follow stages of work, not a large deposit up front.
4. What does the warranty cover, and for how long? Ask for the terms in writing.

Highest Local Scores in Nashua

1. 01

   61.3Local Score

   GTA Auto Service

   Milford · ★ 4.9 · 65 reviews

   No review trend yet

   CheckedOperating status

   Request a quoteData profile

2. 02

   59.0Local Score

   Ciardelli Fuel Company

   Milford · ★ 4.6 · 158 reviews

   No review trend yet

   CheckedOperating status

   Request a quoteData profile

3. 03

   57.8Local Score

   Glidden Auto Services

   Nashua · ★ 4.8 · 34 reviews

   No review trend yet

   CheckedOperating status

   Request a quoteData profile

4. 04
   Joyce Cooling & Heating Inc.Nashua · ★ 5.0 · 1,406 reviews
   71.9
   –no trend yet
5. 05
   Sanford Temperature ControlMilford · ★ 4.9 · 278 reviews
   66.1
   –no trend yet