Sigma Heating and AirHVAC contractor in Diboll, TX
Sigma Heating and Air is an HVAC contractor at 100 E Borden Dr, Diboll, TX 75941, ranked #11 of 24 HVAC contractors in Diboll and rated 5.0 from 8 Google reviews.
Diboll, TXUpdated 0 paid placements in any rankingHow we rank
Key facts
| Address | 100 E Borden Dr, Diboll, TX 75941Get directions |
|---|---|
| Phone | (936) 674-5522 |
| Website | sigmaheatingandair.com |
| Google rating | 5.0 from 8 Google reviews |
Trades
Each trade shows the evidence we matched it on.
- HVACmain tradeGoogle main category
Service area
Serves Diboll and 1 town within 25 miles: Lufkin.
Based in Diboll, TXView on map
Typical heating and cooling prices
| Job | Low | Typical | High |
|---|---|---|---|
| AC replacementPer system, installed (unit plus labor); typical range of customer-reported jobs. US national range | $3,887 | $5,978 | $8,073 |
| Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range | $2,823 | $4,814 | $6,896 |
Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.
Compare nearby HVAC contractors
| Business | Rank | CR Score | Google rating | License verified | Saturday | Sunday | Distance away |
|---|---|---|---|---|---|---|---|
| Sigma Heating and Air (this business) | — | 57 | 5.0 (8) | — | — | — | |
| Tom Brown AC & Heating | #9 | 57 | 4.8 (18) | — | Yes | Yes | 13.5 mi |
| Lone Star Air Conditioning and Heating | #10 | 57 | 5.0 (217) | — | Yes | No | 20.9 mi |
| McLeod's Air Conditioning & Refrigeration, Inc. | #12 | 56 | 4.8 (19) | — | Yes | No | 12.7 mi |
Reviews
ContractorsRanked reviews
No ContractorsRanked reviews yet
5.0from 8 Google reviews
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Questions about Sigma Heating and Air
How is Sigma Heating and Air ranked in Diboll?
Sigma Heating and Air is ranked #11 of 24 HVAC contractors in Diboll by CR Score, with 57 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.
What areas does Sigma Heating and Air serve?
Serves Diboll and 1 town within 25 miles: Lufkin. The list is based on the business's location and the usual service radius for heating and cooling. Confirm your address is covered when you call.
What do Google reviews say about Sigma Heating and Air?
Sigma Heating and Air has a rating of 5.0 from 8 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.
How do I contact Sigma Heating and Air?
Call Sigma Heating and Air on (936) 674-5522. The business is at 100 E Borden Dr, Diboll, TX 75941. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.
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Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.