KJ Thomas Mechanical — Longmont, CO Furnace Replacement…

Name: KJ Thomas Mechanical
Address: 6175 Trevarton Dr, Longmont, CO, 80503, US
Telephone: +1-303-435-8141
Price range: $$
Rating: 4.9

Overview

KJ Thomas Mechanical leads with furnace replacement experience and a strong high-efficiency focus. The company states 40+ years of combined tradesman experience. KJ Thomas notes they help homeowners qualify for Xcel Energy rebates in Boulder County. The website advertises same-day emergency response for urgent heating needs. Reviews and site copy emphasize tidy, detail-focused installs and clear communication.

High-efficiency gas furnaces installed across Longmont and Boulder County. Family-owned crew with 40+ years of tradesman experience. Financing available through Wells Fargo for qualifying installs. Emergency service available same-day (advertised).

Score breakdown

Longmont, CO Furnace Replacement average is 80/100. Ranks #3 of 4 listed Furnace Replacement providers in Longmont, CO.

Editorial Review 79 46%

Google Rating 97 17%

Local Search Rank 25 9%

Review Sentiment 95 15%

Years in Business 100 4%

Review Volume 66 9%

Composite of public-record signals (BBB, license records), customer review signals (Google, Yelp), and editorial assessment of provider profile. See full methodology →

vs. Longmont average

Across 4 vetted furnace replacement providers in Longmont, CO.

Signal	KJ Thomas Mechanical	Longmont avg	Delta
Vouched Score	79/100	80/100	-1 vs avg
Google rating	4.9★	4.9★	matches city average
Review volume	275+	835+	-560 vs avg
Years in business	40+	27+	+13 vs avg

What customers say

Google

4.9 ★

275+ reviews

Reviewers praise: clean installstight workmanshipclear communicationrebate assistance

Google · 275+ reviews

Pros

Strengths

High Google rating (4.9★ across 275+ reviews)
Long-established (40+ years in business)

Services offered (self-reported)

Emergency response: same-dayFinancing available

When to choose them

You need same-day furnace replacement
You need same-day or after-hours service
You need to finance the work
You prefer a family-owned operation
You value a long-tenured local operator (40+ years in business)

Services

Furnace ReplacementEmergency HVAC Service

Service area

Longmont, COhome

Replacement Longmont, COhome

Office: 6175 Trevarton Dr, Longmont, CO 80503, USA

Neighborhood: 6175 Trevarton Dr, Longmont, CO 80503, USA

Contact & hours

📞

+1-303-435-8141

🌐

kjtmechanical.com

✉️

[email protected]

📍

6175 Trevarton Dr, Longmont, CO 80503, USA

🕒

Call for hours

Frequently asked questions

What are the pros of KJ Thomas Mechanical?

Based on public records and customer reviews: High Google rating (4.9★ across 275+ reviews); Long-established (40+ years in business); Emergency response: same-day; Financing available.

When should I choose KJ Thomas Mechanical?

Choose them if: You need same-day furnace replacement; You need same-day or after-hours service; You need to finance the work; You prefer a family-owned operation; You value a long-tenured local operator (40+ years in business).

What is the Vouched Score for KJ Thomas Mechanical?

79/100. Top contributing signals: Years In Business 100/100, Google Rating 97/100+ Review Sentiment 95/100. The score blends public-record signals (BBB, license records), customer review signals (Google, Yelp), and editorial assessment.

How long has KJ Thomas Mechanical been in business?

KJ Thomas Mechanical has been operating for 40+ years in Longmont, CO.

How can I contact KJ Thomas Mechanical?

Call KJ Thomas Mechanical at +1-303-435-8141. Address: 6175 Trevarton Dr, Longmont, CO 80503, USA.

What does furnace replacement service typically cost when working with a Longmont, CO provider like KJ Thomas Mechanical?

Full gas furnace replacement typically runs $3,100–$6,750, and high-efficiency condensing furnace runs $4,700–$9,900 in Longmont, Colorado. These are area-wide market estimates, not KJ Thomas Mechanical's quotes. For an exact price, request a written estimate from KJ Thomas Mechanical.

What pricing terms does KJ Thomas Mechanical publish on their website?

KJ Thomas Mechanical's website publishes: Financing available. Promotions and plans change — confirm currently-available terms with KJ Thomas Mechanical before acting.

Does KJ Thomas Mechanical do Furnace Replacement in Longmont, CO?

Yes. KJ Thomas Mechanical lists Furnace Replacement among its services and serves Longmont, CO and Replacement Longmont, CO. Call +1-303-435-8141 for a quote.

Does KJ Thomas Mechanical do Emergency HVAC Service in Longmont, CO?

Yes. KJ Thomas Mechanical lists Emergency HVAC Service among its services and serves Longmont, CO and Replacement Longmont, CO. Call +1-303-435-8141 for a quote.

Compare with nearby providers

Provider	Vouched	Google	Years
KJ Thomas Mechanical (this company)	79/100	4.9★ (275+)	40+
Welzig Heating, Air, Plumbing & Electric ⭐ Highest Vouched Score · ⭐ Honest Replace-vs-Repair · ⭐ Furnace + AC Changeout	85/100	4.9★ (1,445+)	32+
Colorado Green Plumbing, Heating and Cooling	74/100	4.9★ (150+)	46+
TNT Home Services - Longmont	78/100	4.8★ (860+)	10+

Listed in

Best Furnace Replacement in Longmont, CO

Explore more

All Furnace Replacement providers All services in CO Best Furnace Replacement in Longmont, CO VouchedPros home