Top 10 HVAC Contractors in Lehigh County, PA (2026)

<a href="https://wolfpackhomeservices.com/blog/top-10-hvac-contractors-in-lehigh-county-pa-2026/" target="_blank" rel="noopener"><img src="https://peakkr.com/cw-badge/3112.svg" width="360" height="120" alt="Featured on Wolfpack Home Services"></a>

A furnace that quits during a January cold snap in Allentown does not leave much time for research. This list ranks ten HVAC companies serving Lehigh County, ordered by their Google rating and review volume, with what each one actually does and who they suit. Use it as a shortlist, then check registration, insurance and license before anyone touches your equipment.

For a closer look at this topic, see our guide: Chester County, PA's 10 Best HVAC Contractors, Ranked for 2026.

We cover this topic in more depth in 10 Concrete & Masonry Contractors in Philadelphia 2026.

Related reading: Top 10 Handyman Services in Lehigh County, PA (2026).

Several of these companies sit just over the line in Northampton County but cover the whole Lehigh Valley, so we included them where their service area clearly reaches Lehigh County homes.

1. Ace Hardware Home Services

Ace Hardware Home Services runs its Lehigh Valley office out of 1820 W Fairview St in Allentown, PA 18104, and holds a 4.9 star average across 1,913 Google reviews. The branch is listed as an HVAC contractor, air conditioning contractor, heating contractor and electrician, so a single visit can cover a condenser swap and the circuit feeding it. That combination suits homeowners who are tired of coordinating two separate trades around one project. The national brand behind the local crews also means standardized scheduling and documentation.

Best for: homeowners who want heating, cooling and electrical handled by one company.

2. Jack Lehr Heating Cooling & Electric

Based at 2841 W Emaus Ave in Allentown, PA 18103, Jack Lehr carries a 4.9 star rating from 1,619 reviews. The employee-owned team covers air conditioning installation, replacement, repair and preventative maintenance, plus heating, indoor air quality, duct cleaning, commercial work and electrical. Their own materials lean hard on service guarantees and on efficiency gains that show up in the utility bill, which matters in older West End homes running tired equipment. If you are weighing a repair against a full system upgrade, they handle both ends of that decision.

Best for: planned system replacements with a maintenance plan attached.

3. Services United

Services United operates from 2430 Emrick Blvd in Bethlehem, PA 18020 and holds 4.9 stars across 1,184 reviews. They service and repair all makes and models of residential HVAC equipment, and they are also listed as a boiler supplier and furnace repair service, which is useful in a county where hydronic heat is still common. Their site promises a live person on the phone 24/7 rather than an answering service, and they advertise a repair discount for first-time customers. Technicians are hand-picked rather than hired in bulk, per the company.

Best for: after-hours breakdowns and boiler work.

4. Comfort Solutions

Working out of 2250 Corriere Rd in Easton, PA 18045, Comfort Solutions has a 4.9 star average from 1,119 reviews. The company is family and veteran-owned and has been serving the area since 2008, with air conditioning repair, furnace repair and full system work across the Valley. They offer after-hours service by phone and describe their guiding principle as people first. Homeowners in eastern Lehigh County and the Bethlehem corridor are within easy reach of their trucks.

Best for: households that prefer a smaller, owner-led company.

5. Haller Enterprises

Haller Enterprises covers the region from 4240 Fritch Dr in Bethlehem, PA 18020 and holds 4.7 stars across 1,362 reviews. Google lists them under HVAC contractor, electrician, electrical installation and drainage service, which points to a broad in-house trade bench rather than a single specialty. That breadth helps when an HVAC job uncovers a condensate drainage problem or an undersized panel. Their review count is one of the highest on this list, so there is a deep public record to read before you call.

Best for: projects that cross from HVAC into electrical or drainage.

6. Burkholder’s Heating & Air Conditioning Inc.

Burkholder’s sits at 383 Minor St in Emmaus, PA 18049, with 4.7 stars from 1,262 reviews. Family-owned and operated since 1960 and now led by the founder’s son, the company serves both residential and commercial customers and employs NATE-certified technicians. They also handle air duct cleaning and furnace repair, and they offer financing on larger installations. For homeowners in Emmaus, Macungie and the Upper Milford area, they are close enough for same-day coverage on most calls.

Best for: long-established service history and duct work in older borough homes.

7. Curtis Total Service

Curtis Total Service runs from 1415 E Pennsylvania St in Allentown, PA 18109 and carries 4.6 stars across 900 reviews. They combine plumbing, heating, cooling and electrical under one roof, along with air duct cleaning, and they publish coupons and discounts including an offer on first service. Their site notes that emails are answered weekdays between 8am and 5pm, with a phone line for emergencies. That single-vendor setup saves time when a water heater and a furnace age out in the same year.

Best for: homeowners juggling plumbing and HVAC on the same property.

8. Hannabery HVAC

Hannabery HVAC is at 200 Schantz Rd in Allentown, PA 18104, with a 4.9 star rating from 478 reviews. They are a Trane specialist, a Fujitsu Elite Contractor and a Diamond Elite Contractor, which is the credential set you want for ductless mini-split work. The company advertises free estimates and up-front pricing, and splits its business across sales, service, installation and commercial departments. Their site also publishes a large library of common-problem explanations, which is unusual for a contractor of this size.

Best for: ductless mini-splits and brand-specific installations.

9. Faust Heating & AC Co. Inc.

Faust Heating & AC works out of 2186 Community Dr in Bath, PA 18014 and holds 4.9 stars from 360 reviews. Google lists them as an HVAC contractor, air conditioning contractor, air conditioning repair service and air conditioning system supplier, so they handle both the diagnosis and the equipment supply side. Their location puts northern Lehigh County towns like Slatington and Northampton borough within a short drive. The review average is strong for a company of that size, which usually reflects a tight crew and repeat customers.

Best for: cooling repairs and replacements in the northern half of the county.

10. Dual Temp Co., Inc.

Dual Temp operates from 2050 S 12th St in Allentown, PA 18103 and has a 4.9 star average across 350 reviews. Alongside HVAC contractor and air conditioning repair, Google also lists them as a construction company, which suggests capability on larger mechanical installs rather than purely residential service calls. That makes them worth a call if your project involves new ductwork routing, an addition or a light commercial space. South Allentown and the 18103 ZIP are their home turf.

Best for: bigger mechanical installations and light commercial work.

What to Look for When Hiring

Star ratings narrow the field, but paperwork decides it. Before signing anything, confirm these five things in writing:

• A registered business: the registration or tax documents should match the name on the proposal, not a slightly different DBA.
• Current insurance: ask for a certificate showing coverage today, not a copy from last year.
• EPA Section 608 certification: any technician who opens a refrigerant line is required to hold it under the EPA’s Section 608 program.
• A written contract: Pennsylvania’s Home Improvement Consumer Protection Act requires registration with the Attorney General’s office and a written contract for any job over $500.
• Load calculation, not guesswork: a replacement quote should reference your home’s square footage and insulation, not just the size of the old unit.

Pennsylvania does not issue a statewide license for plumbing, HVAC or electrical work, though municipalities may license locally. Rules change, so confirm current requirements with the agency and your municipality before work starts.

Why Local Experience Matters in the Lehigh Valley

Lehigh County housing stock runs from 1900s Allentown row homes with converted gravity systems to new builds in Lower Macungie with high-efficiency heat pumps. A contractor who works here weekly already knows which neighborhoods have no ductwork, which have oversized returns, and where UGI gas service ends and propane or oil begins. That knowledge changes the recommendation before anyone opens a catalog.

Permits matter too. Under the Uniform Construction Code, permits are issued by each municipality or its appointed inspection agency, so a job in Emmaus borough follows a different submission path than one in Upper Macungie Township. Contractors who pull permits in these offices regularly move faster than someone crossing in from two counties away.

Local crews also plan for the weather pattern here: humid July stretches that push condensate lines hard, and February cold that exposes an undersized heat pump’s backup strip heat. If your project touches other systems, our guides to Lehigh County plumbers and septic and well companies in Lehigh County cover the same ground.

Questions to Ask Before You Hire

1. Is your business registered with the Pennsylvania Attorney General’s office, and what is the registration number?
2. Will the technician on my job hold EPA Section 608 certification?
3. Who pulls the permit with my municipality, and is the fee in the quote?
4. Did you perform a load calculation, and can I see the result?
5. What exactly does the labor warranty cover, and for how long after install?
6. Is the price fixed, or does it change if the line set or electrical needs upgrading?
7. Who answers the phone at 11pm in January, and what does that call cost?

Frequently Asked Questions

How Much Does a Furnace and AC Replacement Cost in Lehigh County?

Most full system replacements in this area land somewhere between $7,000 and $15,000, with high-efficiency heat pumps and new ductwork pushing toward the upper end. Age of the home, electrical capacity and whether the line set can be reused all move the number. Get at least two written quotes that break out equipment, labor and permit fees separately.

Does Pennsylvania License HVAC Contractors?

No, Pennsylvania does not issue a statewide license for plumbing, HVAC or electrical work, though individual municipalities may require a local license. The state does require registration with the Attorney General’s office under the Home Improvement Consumer Protection Act, plus a written contract for any job over $500. Technicians handling refrigerant must also hold EPA Section 608 certification.

Do I Need a Permit to Replace a Furnace?

In most cases yes, because permits are issued under the Uniform Construction Code by each municipality or its appointed inspection agency. Your contractor normally files it, but confirm that in writing since the homeowner carries the risk if inspection is skipped. Requirements vary between boroughs and townships, so check with your local code office.

How Many Contractors Will Contact Me If I Request Estimates?

With Wolfpack Home Services, you choose 1 to 4, and your details are never released to more than that number. If we cannot match your request, we say so and your details are not shared. Estimates are free: $0 for homeowners.

Heating & Cooling in Lehigh County: local guide