Welzig Heating, Air, Plumbing & Electric
Longmont, CO HVAC · #2 of 3 · NATE-certified · 32+ yrs
Welzig Heating, Air, Plumbing & Electric as a HVAC provider
Longmont, CO HVAC · #2 of 3 · NATE-certified · 32+ yrs
Heat pump installations for ducted air-source systems are listed on Welzig's service pages. NATE-certified technicians are listed among their credentials. Welzig reports 30+ years serving Boulder County homeowners since 1994. Longmont's seasonal cold winters and warm summers make correct heat pump sizing important. Online mentions note same-day and emergency response availability.
Ducted air-source heat pump installations targeted to Longmont, CO homes. NATE-certified technicians are listed on their credentials page. Free estimates and financing options are advertised on the site. Emergency service availability is listed as 24/7 for urgent HVAC needs.
| Signal | Welzig Heating, Air, Plumbing… | Longmont avg | Delta |
|---|---|---|---|
| Vouched Score | 85/100 | 85/100 | matches city average |
| Google rating | 4.9★ | 4.9★ | matches city average |
| Review volume | 1,445+ | 1,940+ | -496 vs avg |
| Years in business | 32+ | 22+ | +10 vs avg |
- High Google rating (4.9★ across 1,445+ reviews)
- Long-established (32+ years in business)
- NATE-certified technicians
- Emergency response: 24/7
- Financing available
- Free estimates
- You need heat pump replacement
- You need dual-fuel heat pump installation
- You need to finance the work
- You prefer a family-owned operation
| Provider | Vouched | Years | BBB | Yelp | Our picks | |
|---|---|---|---|---|---|---|
Welzig Heating, Air, Plumbing & Electric (this company) |
85/100 | 4.9★ (1,445+) | 32+ | — | — | Highest Vouched Score Smart Thermostat Install Free Estimates |
| 91/100 | 4.9★ (3,520+) | 25+ | — | — | Highest Vouched Score Best for Heat-Exchanger Replacement Best for Gas Valve & Combustion Repair |
|
| 78/100 | 4.8★ (860+) | 10+ | — | — | — |
Company-wide signals
True across every category below.
Heat pump installations for ducted air-source systems are listed on Welzig's service pages. NATE-certified technicians are listed among their credentials. Welzig reports 30+ years serving Boulder County homeowners since 1994. Longmont's seasonal cold winters and warm summers make correct heat pump sizing important. Online mentions note same-day and emergency response availability.
Heat pump installations for ducted air-source systems are listed on Welzig's service pages. NATE-certified technicians are listed among their credentials. Welzig reports 30+ years serving Boulder County homeowners since 1994. Longmont's seasonal cold winters and warm summers make correct heat pump sizing important. Online mentions note same-day and emergency response availability.
Heat pump installations for ducted air-source systems are listed on Welzig's service pages. NATE-certified technicians are listed among their credentials. Welzig reports 30+ years serving Boulder County homeowners since 1994. Longmont's seasonal cold winters and warm summers make correct heat pump sizing important. Online mentions note same-day and emergency response availability.
Heat pump installations for ducted air-source systems are listed on Welzig's service pages. NATE-certified technicians are listed among their credentials. Welzig reports 30+ years serving Boulder County homeowners since 1994. Longmont's seasonal cold winters and warm summers make correct heat pump sizing important. Online mentions note same-day and emergency response availability.
Heat pump installations for ducted air-source systems are listed on Welzig's service pages. NATE-certified technicians are listed among their credentials. Welzig reports 30+ years serving Boulder County homeowners since 1994. Longmont's seasonal cold winters and warm summers make correct heat pump sizing important. Online mentions note same-day and emergency response availability.
Heat pump installations for ducted air-source systems are listed on Welzig's service pages. NATE-certified technicians are listed among their credentials. Welzig reports 30+ years serving Boulder County homeowners since 1994. Longmont's seasonal cold winters and warm summers make correct heat pump sizing important. Online mentions note same-day and emergency response availability.
Heat pump installations for ducted air-source systems are listed on Welzig's service pages. NATE-certified technicians are listed among their credentials. Welzig reports 30+ years serving Boulder County homeowners since 1994. Longmont's seasonal cold winters and warm summers make correct heat pump sizing important. Online mentions note same-day and emergency response availability.
Heat pump installations for ducted air-source systems are listed on Welzig's service pages. NATE-certified technicians are listed among their credentials. Welzig reports 30+ years serving Boulder County homeowners since 1994. Longmont's seasonal cold winters and warm summers make correct heat pump sizing important. Online mentions note same-day and emergency response availability.
Heat pump installations for ducted air-source systems are listed on Welzig's service pages. NATE-certified technicians are listed among their credentials. Welzig reports 30+ years serving Boulder County homeowners since 1994. Longmont's seasonal cold winters and warm summers make correct heat pump sizing important. Online mentions note same-day and emergency response availability.
What customers say
Services
- Emergency HVAC Service — After-hours emergency response for no-cool and no-heat calls.
Service area
Guarantees & credentials
- Licensed plumbers
- Licensed electricians
- Licensed and insured
- NATE-certified
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 Welzig Heating, Air, Plumbing & Electric?
When should I choose Welzig Heating, Air, Plumbing & Electric?
What is the Vouched Score for Welzig Heating, Air, Plumbing & Electric?
How long has Welzig Heating, Air, Plumbing & Electric been in business?
How can I contact Welzig Heating, Air, Plumbing & Electric?
What does HVAC service typically cost when working with a Longmont, CO provider like Welzig Heating, Air, Plumbing & Electric?
What pricing terms does Welzig Heating, Air, Plumbing & Electric publish on their website?
Does Welzig Heating, Air, Plumbing & Electric do Heat Pump Service in Longmont, CO?
Does Welzig Heating, Air, Plumbing & Electric do Emergency HVAC Service in Longmont, CO?
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Profile last updated August 2, 2026.