Top 7 HVAC companies in Waukesha, Wisconsin

Waukesha County holds a population of 404198 and sits in IECC zone 6A. Its climate is strongly heating-dominant with 6900 heating degree days and only 700 cooling degree days. A shortlist of seven HVAC firms was assembled from public listing data collected on 2026-08-16. Companies are ranked by a Bayesian-adjusted rating that pulls each star rating toward the national mean of 4.764 until review volume grows large enough for the raw score to stand alone. Small tie-breakers favor a public website, an HVAC-specialist listing rather than general contractor, and published 24/7 availability. This is a shortlist built from public listing data, not a review of work performed.

How to choose

Review volume matters more than the raw star rating because the adjustment formula shrinks the influence of small samples. A 5.0 from four reviews moves farther toward 4.764 than a 4.9 from two hundred reviews. Trade Ally membership in the Focus on Energy network adds an external quality screen that the state itself does not supply. Municipal permit rules and local inspection agencies vary, so homeowners must confirm requirements directly with the jurisdiction where the work will occur.

The shortlist

Johnstone Supply

Johnstone Supply operates from 1615 Paramount Dr, Waukesha, WI 53186 and lists the phone number (262) 650-1500. Its listing carries no category tag and no 24/7 claim. Four reviews produced a raw rating of 5 that the adjustment pulled down to 4.792. The modest sample size accounts for most of the 0.208-point drop from the raw score. These numbers cannot reveal whether the firm stocks equipment or performs installations.

Pure Mecahnical

Pure Mecahnical lists its address as W227N937 Westmound Dr, Waukesha, WI 53186 and the phone number (414) 897-8012. The firm appears under the general-contractor heading and maintains a public website. Two reviews at a raw 5.0 adjusted to 4.779. The small review count produces a 0.221-point movement toward the national mean. The numbers supply no information on actual installation quality or response times.

RAAB Service Inc

RAAB Service Inc is located at 2015 S West Ave, Waukesha, WI 53189 and can be reached at (262) 542-6137. It is listed as a general contractor yet publishes 24/7 availability. Five reviews at a raw 5.0 adjusted downward only 0.202 points to 4.798 because the published availability tie-breaker offset part of the pull. The figures cannot show how often the 24/7 line is answered by qualified technicians.

Doyne AC & Furnace Repair

Doyne AC & Furnace Repair lists the address 3228 Turnberry Oak Dr, Waukesha, WI 53188 and the phone number (262) 333-5153. Its category is Services and it maintains a website. One review at a raw 5.0 adjusted to 4.772. The single-review sample creates a 0.228-point movement toward the national mean. The data give no indication of typical job volume or crew size.

Waukesha Heating & Air Conditioning Solution

Waukesha Heating & Air Conditioning Solution operates from 817 N East Ave, Waukesha, WI 53186 and lists the phone number (262) 368-6061. It appears under the general-contractor heading with no website or 24/7 claim. One review at a raw 5.0 adjusted to 4.772. The single data point produces a 0.228-point shift toward 4.764. The numbers cannot disclose whether the firm carries inventory or subcontracts work.

A/C Service Inc.

A/C Service Inc. is located at 2211 S West Ave Unit b, Waukesha, WI 53189 and can be reached at (262) 549-5566. It is listed as a general contractor and maintains a website. Seven reviews produced a raw rating of 3.9 that the adjustment lifted to 4.601. The modest review count accounts for a 0.701-point movement toward the national mean. These figures cannot reveal whether recent performance has improved.

Heating & Cooling, LLC.

Heating & Cooling, LLC. lists its address as 1507 E Sunset Dr, Waukesha, WI 53189. Seven reviews produced a raw rating of 2.1 that the adjustment raised to 4.26. The small sample size creates a 2.16-point movement toward the national mean. No phone number appears in the listing data. The numbers cannot indicate whether service volume has changed since the reviews were posted.

Cost

Modeled typical full-system installation sits at $9800 with a documented range of $8800 to $10800. The 2025 invoiced average is $8763 while the upper quartile reaches $12450. Labor is published at $110 per hour and permit fees range from $100 to $350. The two cost sources show strong agreement. No averages or differences are calculated here because both the modeled and invoiced figures are taken directly from the supplied data. Homeowners should request itemized quotes that separate equipment, labor, and permit costs.

Licensing and permits

Wisconsin maintains state-level oversight through the Department of Safety and Professional Services. The board lists HVAC Contractor and HVAC Qualifier categories, yet no state HVAC contractor license is required. Insurance requirements are unknown at the state level. Permits for one- and two-family dwellings fall under Wisconsin's uniform dwelling code and are administered by the municipality or a UDC inspection agency where the municipality does not administer the code. Fees range from $100 to $350. Homeowners must contact the local building department to confirm which agency issues permits and what documentation is required for furnace or air-conditioner replacements.

Incentives

Wisconsin Home Energy Rebates through the Public Service Commission and Focus on Energy remain available. The maximum heat-pump rebate reaches $8000. No state tax credit exists. Ratepayer-funded Focus on Energy rebates range from $500 to $2000 through utilities that include We Energies, Alliant, Xcel Energy, WPS, and Madison Gas & Electric. Contractor participation requires Trade Ally network membership, which includes training and quality-assurance inspections. The 25C and 25D federal tax credits expired at the end of 2025. The 48E investment tax credit survives only for commercial or third-party-owned systems. Trade Ally status therefore functions as the primary contractor screen in a state without HVAC licensing.

Climate

Waukesha County lies in IECC zone 6A with a moist regime. Heating degree days total 6900 while cooling degree days total only 700, producing a heating-dominant load profile. Winter design temperature is -2 °F and summer design temperature is 88 °F. Winters are very dry, so humidification is common. Natural gas is the primary heating fuel. Heat-pump suitability is rated fair and requires cold-climate equipment with gas backup. Central air-conditioning saturation is already high. The short cooling season is concentrated in July and August, so equipment sizing must prioritize heating capacity while still handling peak summer humidity. Peak service demand occurs in winter.

The shortlist rests on transparent public data rather than site visits or performance testing. Homeowners should verify current licensing status, insurance, and Trade Ally membership directly before signing any contract.