24/7 Emergency · Herndon
Emergency HVAC Companies in Herndon, VA — Available 24/7
When you can't wait, these hvac companies in Herndon offer emergency response. Call now — most respond within the hour.
As of May 2026, RatingsNearMe ranks 3 hvac companies in Herndon, VA by verified customer ratings and review volume. The highest-rated is AllTech Services, Inc with a 4.9-star rating from 3,083 verified reviews. Also in the top tier: SwiftPro Heating, Cooling & Plumbing and Woody's Sudden Service. The average rating across all listed hvac companies in Herndon is 4.9 stars from 1,283 reviews per business on average.
HVAC service in Herndon: $75–$150/hr for repairs; full system replacement $4,000–$12,000 depending on size and efficiency.
Rankings updated May 17, 2026 · Scored by ratings (35%), review volume (30%), sentiment (20%), completeness (10%), availability (5%) · Not paid placement.
Local Market Snapshot
3
Businesses listed
4.9★
Avg rating
1,283
Avg reviews
May 17, 2026
Last updated
Top Rated HVAC Companies
AllTech Services, Inc
101-A Executive Dr STE 200, Sterling, VA 20166, USA
SwiftPro Heating, Cooling & Plumbing
4230 Lafayette Center Dr N, Chantilly, VA 20151, USA
Woody's Sudden Service
9112A Industry Dr, Manassas Park, VA 20111, USA
HVAC Companies Rankings in Herndon, VA
| # | Business | Rating | Reviews |
|---|---|---|---|
| #1 | AllTech Services, Inc101-A Executive Dr STE 200, Sterling, VA 20166, USA | 4.9★ | 3,083 |
| #2 | SwiftPro Heating, Cooling & Plumbing4230 Lafayette Center Dr N, Chantilly, VA 20151, USA | 4.9★ | 654 |
| #3 | Woody's Sudden Service9112A Industry Dr, Manassas Park, VA 20111, USA | 4.9★ | 111 |
Ranked by verified ratings & review volume · Data from Google Business listings · Updated May 2026
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Frequently Asked Questions — HVAC Companies in Herndon
How do I find the best hvac companies in Herndon?
Look for businesses with 4.5+ stars, 50+ verified reviews, proper licensing and insurance, and transparent pricing. The top-ranked hvac companies in Herndon on this page are scored by our algorithm that weighs ratings, review count, and profile completeness.
Are hvac companies in Herndon licensed and insured?
Licensing requirements vary by trade and state. For most home service contractors, VA requires both a state license and liability insurance. Always ask any contractor for proof of current insurance and a copy of their license number before work begins — you can verify most licenses on your state licensing board's website.
How much do hvac companies charge in Herndon, VA?
Prices vary by scope, materials, and contractor experience. Use the free quote form on this page to request estimates from multiple local pros simultaneously. Getting 3+ quotes is the single most effective way to avoid overpaying.
What should I look for when hiring a hvac companies in Herndon?
Verify licensing and insurance, read recent reviews on multiple platforms, ask for a written estimate before work starts, confirm they pull permits when required, and check references from recent local projects. Featured businesses on this page are ranked by verified ratings and review quality.
How are the hvac companies on this page ranked?
Rankings use a transparent algorithm: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Featured Partner listings have paid for enhanced visibility but must still earn their position through real customer reviews — sponsored listings are clearly labeled.
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How Rankings Work on This Page
Every hvac companies on RatingsNearMe is scored transparently: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Businesses labeled exclusive or premium are Featured Partners — they have paid for enhanced visibility but must still rank through real customer reviews. We cap sponsored boosts so bad businesses can never buy the top spot.
Editorial notice: Ratings are based on publicly available data from Google Business listings. Consumers should independently verify licensing, insurance, and credentials before hiring any service provider. Last updated: May 17, 2026.
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