---
title: HVAC Diagnostic & Repair Service in Deltona: Who to Call
url: https://readthelocallist.com/deltona/hvac-diagnostic-repair/
updated: 2026-10-31
---

Updated October 31, 2026 Deltona Edition [How we choose](https://readthelocallist.com/how-we-choose/)

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4. HVAC Diagnostic & Repair Service

HVAC Diagnostic & Repair Service · Jobs, explained

# HVAC Diagnostic & Repair Service in Deltona: who to call

10 local companies we would call for the job, and what to ask before you pay.

By **the editors of The Local List** Updated October 31, 2026 19 businesses considered

Ask around Deltona for hvac diagnostic & repair service and you’ll hear a handful of names and three quotes that look nothing alike. These 10 stood out from the 19 we compared. They aren’t ranked: each carries a label for what it does best.

**How we chose**

Open businesses with a phone number and enough real reviews to judge fairly, compared on ratings, review history, years in business and record checks. No business paid to be included.

[Read our full methodology](https://readthelocallist.com/how-we-choose/) · [How we make money](https://readthelocallist.com/how-we-make-money/) · [Spotted an error?](https://readthelocallist.com/corrections/)

Who to call

## 10 companies, and when to call each

Editor’s Pick

### [Autumn Air Condtioning and Heating LLC](https://readthelocallist.com/business/autumn-air-condtioning-and-heating-llc-deltona/)

Deltona · Based here

Autumn Air Condtioning and Heating LLC holds a 5.0 average from 824 public reviews.

- Records not yet checked

[Website](https://autumnairandheat.com/)[+1 407-815-4999](tel:+14078154999) Request a quote [Full profile](https://readthelocallist.com/business/autumn-air-condtioning-and-heating-llc-deltona/)

### [Synergy Heating and Cooling Inc](https://readthelocallist.com/business/synergy-heating-and-cooling-inc-deltona/)

Deltona · Based here

Synergy Heating and Cooling Inc holds a 5.0 average from 168 public reviews.

- State license checked

[Website](http://synhvac.com/)[+1 407-412-7188](tel:+14074127188) Request a quote [Full profile](https://readthelocallist.com/business/synergy-heating-and-cooling-inc-deltona/)

### [Olympic Air Conditioning & Heating LLC](https://readthelocallist.com/business/olympic-air-conditioning-heating-llc-deltona/)

Deltona · Based here

Olympic Air Conditioning & Heating LLC holds a 4.9 average from 156 public reviews.

- State license checked

[Website](https://www.olympicairandheat.com/)[+1 407-504-1581](tel:+14075041581) Request a quote [Full profile](https://readthelocallist.com/business/olympic-air-conditioning-heating-llc-deltona/)

Also on the list

#### [DRV A/C LLC](https://readthelocallist.com/business/drv-a-c-llc-deltona/)

 5.0 · 242 reviews

Reader Favorite DeBary

- Records not yet checked

[Website](http://www.drvacrepair.com/)[+1 386-456-7796](tel:+13864567796) Request a quote

#### [A/c mechanical works inc.](https://readthelocallist.com/business/a-c-mechanical-works-inc-deltona/)

 4.9 · 232 reviews

Deltona

- State license checked

[Website](http://acmechanicalworks.com/)[+1 386-561-0560](tel:+13865610560) Request a quote

#### [Redline Energy Solutions](https://readthelocallist.com/business/redline-energy-solutions-deltona/)

 5.0 · 57 reviews

Deltona

- State license checked

[Website](https://www.redlineenergysolutions.com/)[+1 407-529-7523](tel:+14075297523) Request a quote

#### [Premier Frost Heating & Air Conditioning](https://readthelocallist.com/business/premier-frost-heating-air-conditioning-deltona/)

 5.0 · 47 reviews

Deltona

- Records not yet checked

[Website](https://www.premierfrost.com/)[+1 689-214-7602](tel:+16892147602) Request a quote

#### [Ga-Ter Air Inc.](https://readthelocallist.com/business/ga-ter-air-inc-deltona/)

 4.8 · 100 reviews

DeLand

- Records not yet checked

[Website](http://www.ga-terair.com/)[+1 386-738-1330](tel:+13867381330) Request a quote

#### [Aldons Heating & Air Conditioning](https://readthelocallist.com/business/aldons-heating-air-conditioning-deltona/)

 4.7 · 113 reviews

Orange City

- Records not yet checked

[Website](http://aldonshvac.com/)[+1 386-775-4200](tel:+13867754200) Request a quote

#### [Auto Air Specialist](https://readthelocallist.com/business/auto-air-specialist-deltona/)

 4.7 · 113 reviews

Deltona

- Records not yet checked

[Website](https://www.autoairspecialistsofdeltona.com/)[+1 386-860-7937](tel:+13868607937) Request a quote

Also considered

## More HVAC diagnostic & repair service in Deltona

The other businesses we compared for this guide. Ratings and review counts are from public review platforms.

- [Hoffman,Inc.](https://readthelocallist.com/business/hoffman-inc-deltona/) · DeBary · 4.8 from 52 reviews
- [Air Current Inc.](https://readthelocallist.com/business/air-current-inc-deltona/) · Deltona · 4.6 from 135 reviews
- **Erics reliable services LLC** · Deltona · 5.0 from 27 reviews
- [Shaw Air, LLC.](https://readthelocallist.com/business/shaw-air-llc-deltona/) · Deltona · 5.0 from 27 reviews
- [Legacy Air Conditioning](https://readthelocallist.com/business/legacy-air-conditioning-deltona/) · DeLand · 4.6 from 91 reviews
- [SuperCool Bros Heating and Air Conditioning, LLC](https://readthelocallist.com/business/supercool-bros-heating-and-air-conditioning-llc-deltona/) · Deltona · 4.7 from 30 reviews
- **Deltona Heat & Air** · Deltona · 4.9 from 36 reviews
- **Towi A/C Solutions LLC** · Deltona · 5.0 from 11 reviews
- [Air Nation](https://readthelocallist.com/business/air-nation-deltona/) · Deltona · 4.1 from 84 reviews

Side by side

## The 10 at a glance

HVAC Diagnostic & Repair Service, Deltona, October 31, 2026

| Business | Label | Rating | Reviews | Years | Price |
|---|---|---|---|---|---|
| Autumn Air Condtioning and Heating LLC | Editor’s Pick | 5.0 | 824 | – | – |
| Synergy Heating and Cooling Inc | – | 5.0 | 168 | – | – |
| Olympic Air Conditioning & Heating LLC | – | 4.9 | 156 | – | – |
| DRV A/C LLC | Reader Favorite | 5.0 | 242 | – | – |
| A/c mechanical works inc. | – | 4.9 | 232 | – | – |
| Redline Energy Solutions | – | 5.0 | 57 | – | – |
| Premier Frost Heating & Air Conditioning | – | 5.0 | 47 | – | – |
| Ga-Ter Air Inc. | – | 4.8 | 100 | – | – |
| Aldons Heating & Air Conditioning | – | 4.7 | 113 | – | – |
| Auto Air Specialist | – | 4.7 | 113 | – | – |

On a phone, swipe the table sideways to see every column.

Hiring guide

## Before you sign with a company

The best businesses welcome these questions. If a company dodges them, keep looking.

1. **Check the license.** Where your state requires one for this work, look it up on the state’s licensing site before anyone visits, not after.
2. **Get written quotes for the same scope.** Ask each company to price the same job, materials and equipment so you’re comparing like with like.
3. **Ask who handles permits.** If the job needs one, the company should pull it and tell you how long it usually takes.
4. **Read the payment schedule.** Payments should follow progress, with a modest deposit up front.
5. **Get the warranty in writing.** Know what’s covered, for how long, and whether it transfers if you sell.

Get quotes

## Ask these companies for a price

Tick the companies you want to hear from. Only the companies you tick receive your details.

Send my request to

We pass your details only to the companies ticked above. We may earn a referral fee when a company receives a request; it never affects who appears in our guides. [How we make money](https://readthelocallist.com/how-we-make-money/).

Your questions

## Frequently asked questions

### How did the editors choose these HVAC diagnostic & repair service companies in Deltona?

Editors shortlist businesses with strong ratings and enough reviews, check their records, and choose the final picks against the published criteria. We compared 19 HVAC diagnostic & repair service companies for Deltona. Paid placements never change the order.

### Which of these HVAC diagnostic & repair service companies in Deltona has the best reviews?

Autumn Air Condtioning and Heating LLC has a 5.0 rating from 824 public reviews, the highest on this page.

### Are these HVAC diagnostic & repair service companies licensed?

4 of the 10 businesses here had their state license checked against public records. Each profile shows the source and the date of the check.

### How many quotes should I get for HVAC diagnostic & repair service companies in Deltona?

Get at least three. Use the quote form on this page: only the businesses you tick receive your request.

### Why aren’t the businesses ranked?

Because the right company depends on the job. Each business carries a label that says what it does best, so you can pick the one that fits yours.

Keep reading

## More from The Local List

More Deltona guides

- [HVAC Contractors](https://readthelocallist.com/deltona/best-hvac-contractors/)
- [HVAC Repair](https://readthelocallist.com/deltona/hvac-repair/)
- [HVAC System Replacement](https://readthelocallist.com/deltona/hvac-replacement/)
- [AC Repair](https://readthelocallist.com/deltona/ac-repair/)
- [AC Maintenance & Tune-Up](https://readthelocallist.com/deltona/ac-maintenance/)
- [AC Installation & Replacement](https://readthelocallist.com/deltona/ac-replacement/)
- [Furnace & Heating Repair](https://readthelocallist.com/deltona/furnace-repair/)
- [Furnace Installation & Replacement](https://readthelocallist.com/deltona/furnace-replacement/)

HVAC Diagnostic & Repair Service in other editions

- [Jacksonville](https://readthelocallist.com/jacksonville/hvac-diagnostic-repair/)
- [Miami](https://readthelocallist.com/miami/hvac-diagnostic-repair/)
- [Tampa](https://readthelocallist.com/tampa/hvac-diagnostic-repair/)
- [Orlando](https://readthelocallist.com/orlando/hvac-diagnostic-repair/)
- [Port St. Lucie](https://readthelocallist.com/port-st-lucie/hvac-diagnostic-repair/)
- [St. Petersburg](https://readthelocallist.com/st-petersburg/hvac-diagnostic-repair/)
- [Cape Coral](https://readthelocallist.com/cape-coral/hvac-diagnostic-repair/)
- [Hialeah](https://readthelocallist.com/hialeah/hvac-diagnostic-repair/)

## Local facts

Public records behind this guide.

- 3,408 Cooling degree days per year (Annual cooling degree days (base 65°F), a measure of how much air conditioning a climate needs; NOAA station Sanford (USC00087982), about 7 miles from the city center point.) Source: [NOAA NCEI, U.S. Climate Normals 1991–2020](https://www.ncei.noaa.gov/data/normals-annualseasonal/1991-2020/access/USC00087982.csv) · 1991–2020 normals
- 108 Days a year at 90°F or hotter (Average number of days per year with a high of 90°F or more; NOAA station Sanford (USC00087982), about 7 miles from the city center point.) Source: [NOAA NCEI, U.S. Climate Normals 1991–2020](https://www.ncei.noaa.gov/data/normals-annualseasonal/1991-2020/access/USC00087982.csv) · 1991–2020 normals
- $285,400 Median home value (Median value of owner-occupied homes (ACS table B25077).) Source: [U.S. Census Bureau, American Community Survey 5-year estimates](https://data.census.gov/table/ACSDT5Y2024.B25077?g=160XX00US1217200) · 2020–2024
- 56.2% Homes built before 1990 (19,801 of 35,240 housing units were built in 1989 or earlier (ACS table B25034, year structure built).) Source: [U.S. Census Bureau, American Community Survey 5-year estimates](https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US1217200) · 2020–2024
- 33,684 Households in Deltona (Occupied housing units (one household per occupied home), ACS table B25003.) Source: [U.S. Census Bureau, American Community Survey 5-year estimates](https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US1217200) · 2020–2024
- June 1 to November 30 Atlantic hurricane season (An average season (1991–2020) has 14 named storms, 7 hurricanes and 3 major hurricanes.) Source: [NOAA National Hurricane Center, Tropical Cyclone Climatology](https://www.nhc.noaa.gov/climo/) · 1991–2020 climate period

In this guide

1. Autumn Air Condtioning and Heating LLC*Editor’s Pick*
2. Synergy Heating and Cooling Inc*Deltona*
3. Olympic Air Conditioning & Heating LLC*Deltona*
4. DRV A/C LLC*Reader Favorite*
5. A/c mechanical works inc.*Deltona*
6. Redline Energy Solutions*Deltona*
7. Premier Frost Heating & Air Conditioning*Deltona*
8. Ga-Ter Air Inc.*DeLand*
9. Aldons Heating & Air Conditioning*Orange City*
10. Auto Air Specialist*Deltona*

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