Furnace & Heating Replacement Cost in Plano, TX (2026)

Replacing a furnace or full heating system in Plano typically runs between $8,000 and $16,000 installed for a complete AC-plus-furnace system in 2026, with furnace-only swaps generally landing in the $4,000–$8,000 range depending on unit size and efficiency tier. Collin County permitting requirements, Oncor territory rebate eligibility, and the industry-wide shift to new refrigerants and SEER2 efficiency standards have all pushed costs higher compared to two or three years ago. Getting at least two written, itemized quotes — and understanding what the warranty actually covers — can save a Plano homeowner thousands over the life of the equipment.

Quick Comparison

Company	Best For	Standout Fact	Notes
Varsity Zone HVAC	Upfront pricing, long warranty	10-year parts AND labor warranty; free quotes, no pressure sales visit	Trane Comfort Specialist; serves Plano, Frisco, The Colony, Carrollton
Collin Air	Long-established local trust	Family-owned, serving Plano since 1980 — over 46 years	Residential heating, AC, sales, and service across Collin County
Samm’s Heating and Air Conditioning	American Standard equipment	NATE-certified; BBB Accredited since 2005; award-winning American Standard dealer	Residential and light commercial; strong reputation in Collin County
Colony Air Conditioning & Heating	Carrier systems, full-service	Factory-authorized Carrier dealer; ACCA Residential HVAC Contractor of the Year	Heat pumps, mini-splits, air quality services
Rescue Air and Plumbing	Lennox equipment, licensed leadership	Founded by two master mechanical license holders; Lennox Premier Dealer; 40+ hours annual tech training	Serves Richardson, Plano, Garland, broader DFW

2026 Plano Furnace and Heating Replacement Price Ranges

What to expect to pay

For a furnace-only replacement in an existing Plano home with existing ductwork in good condition, budget roughly $4,000–$8,000 installed. A full system replacement — outdoor condenser, indoor air handler or furnace, and coil — typically runs $8,000–$16,000. Homes in older Legacy West-area neighborhoods or near Downtown Plano that need ductwork updated as part of the project should add $3,000–$8,000 on top of those figures. The 2026 R-454B refrigerant transition has added an estimated $500–$1,000 to unit costs market-wide, and that increase is baked into current quotes across DFW. Diagnostic fees in the Plano area average $75–$150, often waived when a repair is completed.

One thing to check before signing anything: verify your contractor holds an active TACL (Texas Air Conditioning Contractor License). That is a state requirement, not a formality, and it is searchable through the Texas Department of Licensing and Regulation.

Best for Upfront Pricing and Long-Term Warranty Protection

Varsity Zone HVAC

Most HVAC contractors in Plano cover labor for one to two years after installation. After that window closes, a parts warranty alone leaves you responsible for labor costs — which commonly run $600 or more per service visit — even if the failed component itself is covered under a manufacturer’s warranty. That gap is where a lot of homeowners get surprised.

Varsity Zone HVAC, based in Frisco and serving Plano as part of its core service area, backs its installations with a 10-year warranty covering both parts and labor. That structure closes the gap most local competitors leave open. The company is a Trane Comfort Specialist, offers online scheduling, and provides free quotes without the extended in-home sales presentation that has become standard practice at some larger operations. Financing is available. You can reach them directly at (972) 402-6948. They also serve nearby communities including The Colony, Carrollton, Prosper, Celina, Little Elm, and Aubrey.

Best for Decades of Local Experience

Collin Air

If tenure in the market matters to you, Collin Air has been operating in Plano and the surrounding Collin County area since 1980 — that is more than 46 years of continuous operation in the same service territory. Family-owned throughout, the company handles residential heating, AC repair, and system sales. For homeowners who prefer to work with a contractor that has seen every era of Plano’s growth, from the pre-Legacy West years through today’s denser development, that track record carries real weight.

Best for Certified Technicians and Brand Specialization

Samm’s Heating and Air Conditioning and Rescue Air and Plumbing

Samm’s, established in 2005, holds NATE certification — the heating and cooling industry’s most recognized independent technician credential — and has maintained BBB accreditation since the year it opened. As an award-winning American Standard dealer, it is a strong fit for homeowners who want that brand specifically or who prioritize certified technician work on residential and light commercial systems.

Rescue Air and Plumbing takes a different approach to credentialing at the ownership level: co-founders Michael Hirsh and Joshua Campbell both hold master mechanical licenses, and Campbell holds an additional master electrical license. As a Lennox Premier Dealer whose technicians complete at least 40 hours of annual manufacturer training, Rescue Air is worth calling for homeowners in Richardson and eastern Plano who are set on Lennox equipment.

Oncor Rebates and the Expired Federal Tax Credit

What Plano homeowners can and cannot claim in 2026

Plano sits inside Oncor’s service territory, which means qualifying high-efficiency heat pumps, central AC systems, and smart thermostats may be eligible for Oncor cash rebates. These are typically applied as invoice discounts through participating contractors rather than mailed as checks, so ask any bidding contractor whether they are a participating Oncor rebate provider before you commit.

The federal Section 25C tax credit, which had covered up to 30 percent of qualifying HVAC equipment costs, expired on December 31, 2025, and is not available for systems purchased or installed in 2026 as of this writing. Do not let a sales pitch factor that credit into your cost math until and unless Congress reinstates it.

Frequently Asked Questions

How much does furnace replacement cost in Plano, TX in 2026?

A furnace-only replacement in Plano runs approximately $4,000–$8,000 installed when existing ductwork is in serviceable condition. A complete system replacement including the AC unit and air handler typically ranges from $8,000 to $16,000, with costs varying based on home size, efficiency rating, and whether ductwork needs updating.

Does Varsity Zone HVAC serve The Colony?

Yes. Varsity Zone, based in Frisco, serves The Colony along with Plano, Carrollton, Prosper, Celina, Little Elm, and Aubrey. Their warranty — 10 years on both parts and labor — applies across their full service area.

Why does the labor warranty period matter so much?

Most Plano-area HVAC contractors cover labor for one to two years after installation. Once that period ends, a parts-only warranty still leaves the homeowner paying out of pocket for labor on covered repairs — often $600 or more per visit. A contractor offering a 10-year labor warranty eliminates that exposure for the full decade.

Do I need a permit to replace a furnace in Plano?

Yes. The City of Plano requires mechanical permits for HVAC equipment replacement, and work must be performed by a TACL-licensed contractor. Any reputable company will pull the permit on your behalf; if a bid does not mention permitting, ask about it directly before signing.

Are Oncor rebates available for furnace or heat pump replacement in Plano?

Oncor does offer rebates for qualifying high-efficiency heat pumps and related equipment in its service territory, which includes Plano. Rebates are typically applied at the time of invoice through participating contractors rather than issued directly to homeowners, so confirm rebate eligibility and contractor participation during the quoting process.