HVAC Services in Londonderry, NH

21 HVAC contractors found

HVAC ServiceAC RepairHVAC RepairAC InstallationHVAC Maintenance
Commercial HVAC
Emergency HVAC
AC Replacement

Nelson Electric & Air

5.0(95)

All 95 reviews award 5 stars, with customers consistently praising transparent communication, tidy work…

127 West Rd, Londonderry, NH 03053
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Little Bee Home Inspections

5.0(42)

All five sampled reviewers award 5-star ratings, with four explicitly naming Scott as the inspecting…

63 Stonehenge Rd, Londonderry, NH 03053
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Best Handyman New Hampshire

5.0(25)

Eight reviewers collectively award five stars, with six specifically mentioning responsive communication and…

184 Mammoth Rd UNIT 3, Londonderry, NH 03053
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Tom's Mechanical Services llc

5.0(12)

Eight of twelve reviewers specifically praise the same-day or emergency response capability, with three…

37 Noyes Rd, Londonderry, NH 03053
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Mammoth Crane

5.0(1)

One reviewer awarded a 5-star rating, highlighting the team's willingness to tackle projects other…

85 Mammoth Rd, Londonderry, NH 03053
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Southern New Hampshire Plumbing and Heating

4.9(456)
24/7 Highly Rated

256 five-star reviewers praise the company's same-day emergency response and transparent upfront pricing.…

39 Rockingham Rd, Londonderry, NH 03053
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Rob Roy Mechanical

4.9(260)
Highly Rated

Every reviewer awarded a perfect 5-star rating, with customers particularly praising pricing transparency,…

86 Nashua Rd #1279, Londonderry, NH 03053
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Crossroads Contracting

4.9(69)

Every customer review carries a 5-star rating, with 69 separate evaluations establishing strong consensus.…

15 Londonderry Rd #6, Londonderry, NH 03053
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603 Chimney & Dryer Vent

4.9(54)

Fourteen reviewers mention punctual arrival and efficient work execution as standout qualities. Six customers…

1B Commons Dr, Londonderry, NH 03053
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Home Services at The Home Depot

4.7(3)

All three reviews rate the contractor favorably, with two five-star ratings citing thorough consultation and…

41 Nashua Rd, Londonderry, NH 03053
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Daigle Pool Servicing Co., Inc.

4.3(94)

Two of three accessible reviews award 5 stars, with both mentioning problem resolution after installation.…

3 Mohawk Dr, Londonderry, NH 03053
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Metal Works Inc

4.2(5)

One of five reviewers awarded 2 stars citing contract term disputes and payment deadline conflicts, while the…

24 Industrial Dr, Londonderry, NH 03053
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Bosch Thermotechnology Corp.

3.9(18)

Three of five detailed reviews award single stars, citing unresponsive customer service, troubleshooting…

50 Wentworth Ave, Londonderry, NH 03053
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N.E. RV Inspections

3.7(3)

Two of three reviewers awarded five stars, praising thorough inspections and cost savings, while the single…

83 Rockingham Rd, Londonderry, NH 03053
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ALC Design

3.0(2)

Both reviews posted rating scores and mention responsiveness as a strength. One five-star review emphasizes…

80 Nashua Rd #5b, Londonderry, NH 03053
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Trane HVAC Parts & Supplies

2.0(1)
12 Liberty Dr, Londonderry, NH 03053
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Performance Mechanical Partners

0.0
53 Wentworth Ave A-2, Londonderry, NH 03053
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PalmTree Air Heating & Cooling

0.0
33 Kimball Rd, Londonderry, NH 03053
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Blizzard Bros

0.0
40 Coteville Rd, Londonderry, NH 03053
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Premier Air Filter Solutions, LLC

0.0
7b Button Dr, Londonderry, NH 03053
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Dry Air Systems Inc

0.0
36 Boyd Rd, Londonderry, NH 03053
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HVAC Service Costs in Londonderry, NH

Pricing ranges across all HVAC services offered in Londonderry.

ServiceTypical RangePrice Points
AC Repair$83$3,0807 items →
AC Installation$168$22,4008 items →
AC Replacement$2,352$17,920
HVAC Maintenance$15$8247 items →
HVAC Repair$83$3,8507 items →
HVAC Service$76$15,2286 items →
Emergency HVAC$165$3,850
Commercial HVAC$2$88,000

Prices reflect continental metro averages based on HomeAdvisor and Angi published cost data. Last updated: April 2026.

HVAC in Londonderry, NH: What Homeowners Should Know

Winter temperatures in Londonderry dip to 20 F while summers climb to 82 F, creating a nine-month heating season that runs from October through April. The climate demands robust heating systems and reliable cooling during humid summer stretches. Thirty-eight hvac companies Londonderry serve the community, earning an average 3.8 rating across more than four thousand consumer reviews.

Cost figures in the region range from $2 for minor service calls to $88,000 for complete system replacements, reflecting the span between basic repairs and full installations including heat pumps. New Hampshire requires contractors to hold either a Class A, Class B, or Class C license from the Office of Professional Licensure and Certification, with experience thresholds ranging from two to six years depending on the classification. These credentials ensure technicians working in southern New Hampshire neighborhoods possess demonstrated competency for both residential and commercial projects.

Customer feedback highlights several standout performers. Technicians Chuck and Justin at Southern New Hampshire Plumbing and Heating earn repeat mentions for same-day emergency response and upfront pricing clarity. Rob Roy Mechanical draws praise for detailed pre-work estimates and proactive arrival time communication. Nelson Electric & Air maintains a perfect 5.0 rating across ninety-five reviews, with customers consistently noting tidy work sites and fair pricing as Mike and Michael handle service calls. These patterns reflect what local homeowners value most when selecting the best hvac Londonderry contractors for their properties.

Frequently Asked Questions

Among 21 HVAC contractors serving Londonderry, the top-rated providers average 3.4★ across 1,140 reviews. The highest-ranked companies on this page are sorted by a combination of rating and review volume, so established contractors with consistent quality appear first. Check reviews, licensing, and response time to pick the right fit for your situation.