A to Z Heating & Cooling
Greeley, CO Indoor Air Quality · #5 of 4 · NATE-certified · 15+ yrs
Overview
A to Z lists dedicated furnace repair and diagnostics as a core service. Their website notes NATE-certified technicians and Daikin Comfort Pro dealer status. The company advertises 24/7 emergency response with no after-hours fees for Northern Colorado cold snaps. A to Z reports flat-rate estimates and a seasonal maintenance plan. Their site says technicians complete background checks before hiring.
Furnace repair and diagnostics for Greeley and Northern Colorado homes. NATE-certified technicians, per their site. Daikin Comfort Pro dealer status for factory-specific service. Advertises 24/7 emergency response and no after-hours fees.
Score breakdown
Greeley, CO Indoor Air Quality average is 77/100. Ranks #5 of 4 listed Indoor Air Quality providers in Greeley, CO.
Composite of public-record signals (BBB, license records), customer review signals (Google, Yelp), and editorial assessment of provider profile. See full methodology →
vs. Greeley average
| Signal | A to Z Heating & Cooling | Greeley avg | Delta |
|---|---|---|---|
| Vouched Score | 66/100 | 77/100 | -11 vs avg |
| Google rating | 4.9★ | 4.8★ | +0.1 vs avg |
| Review volume | 20+ | 480+ | -458 vs avg |
| Years in business | 15+ | 44+ | -29 vs avg |
Pros & cons
- Long-established (15+ years in business)
- Smaller review history (23 Google reviews)
When to choose them
- You need same-day or after-hours service
- You want manufacturer-warranty installation work
- You need to finance the work
- You want NATE-certified technicians
Services
Service area
Published pricing
Maintenance plans
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maintenance Plan
As published: maintenance Plan"…t Us Employment Limited Time Offer furnace and AC maintenance Plan starting as low as $225 no after hour fees!! View…"
Financing
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Financing available
As published: Financing available"…See all reviews Buy Today, Pay Over Time. Special Financing Available* We offer financing options for the services our…"
Estimates
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Free estimates
As published: Free estimates"…of its lifespan, contact our friendly staff for a free estimate on a furnace replacement. We also provide expert…"
Guarantees & credentials
- NATE-certified
- Satisfaction Guaranteed
Sourced from the provider's own website. We surface these as published; we do not independently verify each license or warranty.
Contact & hours
Frequently asked questions
What are the pros of A to Z Heating & Cooling?
What are the cons of A to Z Heating & Cooling?
When should I choose A to Z Heating & Cooling?
What is the Vouched Score for A to Z Heating & Cooling?
How long has A to Z Heating & Cooling been in business?
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What does indoor air quality service typically cost when working with a Greeley, CO provider like A to Z Heating & Cooling?
What pricing terms does A to Z Heating & Cooling publish on their website?
Does A to Z Heating & Cooling do Furnace Repair in Greeley, CO?
Does A to Z Heating & Cooling do Emergency HVAC Service in Greeley, CO?
Compare with nearby providers
| Provider | Vouched | Years | |
|---|---|---|---|
A to Z Heating & Cooling (this company) ⭐ Heat-Exchanger Replacement |
66/100 | 4.9★ (20+) | 15+ |
| 68/100 | 4.7★ (140+) | 35+ | |
| 70/100 | 4.8★ (175+) | 28+ | |
Origin Plumbing • Heating • Cooling • Electrical ⭐ Highest Vouched Score · ⭐ Best for Whole-Home Air Purification · ⭐ Best for UV-C Sterilization |
85/100 | 5.0★ (530+) | 92+ |
Listed in
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Profile last updated August 2, 2026.