Call (707) 531-9216 Always here to answer

Serving St. Helena · Napa County

Heating & cooling, up the valley.

Estate homes and Main Street cottages deserve the same honest work.

Call (707) 531-9216 Always here to answer Text Us
  • ✓ Licensed CSL #1103018
  • ★ Trusted by Napa families
  • ✓ Same-day service
  • ✓ Year-round preventative maintenance
Vineyards and hills around St. Helena

JVG in St. Helena

HVAC service in St. Helena, done the family way.

One Napa-based family team · 25 years of experience · Lic. #1103018 (C-20 HVAC · C-10 Electrical · B General)

St. Helena homes range from Main Street cottages to estate properties with multiple zones, wine storage, and guest houses — and both ends of that range are regulars on our schedule. Multi-zone systems fail quietly: one bad damper or a tired zone board and half the house goes uncomfortable while the equipment looks fine. We diagnose the whole system, not just the loudest symptom.

Up-valley summers run hotter than Napa proper, and shaded estate equipment often outlives sun-baked units by years — placement matters, and we factor it into every replacement quote. For wine country properties, steady temperatures aren't a luxury; they protect the house and everything in it.

We're 25 minutes up Highway 29 from our Napa base, and St. Helena appointments are scheduled with that drive built in — when we give you a window, we mean it.

What we do in St. Helena

Worth knowing in St. Helena

One honest note: we don't have an office in St. Helena — we're a family team based in Napa Valley that serves St. Helena on scheduled routes, with emergency priority. When we quote an arrival window, we've already accounted for the drive.

Book your $69.99 inspection in St. Helena

A visual and operational inspection of your system — 11 points, written assessment in plain language, and no repairs, cleaning, or component replacements sold at the door.

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Mon–Sat 7am–7pm · Call or text · A real person answers

Featured Special

Three questions
every Napa homeowner should ask.

  1. When was the last time your furnace and A/C had maintenance?
  2. When did your system last have a full inspection?
  3. Does your system need a preventative maintenance inspection?
$ 69 .99

Our maintenance inspection includes

A visual and operational inspection only — no repairs, cleaning, or component replacements are included in this visit.

  • Inspect the blower motor and fan for visible wear or damage
  • Inspect and test the ignition system and pilot assembly for proper operation
  • Verify and test all safety controls and limit switches for correct function
  • Inspect accessible gas piping and valves for signs of leaks or corrosion
  • Inspect the venting system for blockages or damage
  • Check carbon monoxide levels in the living space with appropriate test instruments
  • Examine the heat exchanger for visible cracks, corrosion, or damage
  • Inspect the condenser coil for visible damage, debris buildup, or restricted airflow
  • Inspect and tighten accessible electrical connections as needed for safe operation
  • Check thermostat operation and basic calibration for accurate temperature control
  • Test the furnace cycle for proper ignition, operation, and shutdown
Call (707) 531-9216 Text to Book

Available throughout Napa Valley & Sonoma County · Family-operated · 25 years of experience

Claim the $69.99 Special

Book your maintenance inspection.

Leave your details and we'll call to schedule — usually same day. No obligation.

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FAQ

Common questions,
honest answers.

What areas does JVG service?

Napa Valley and Sonoma County — including Napa, Sonoma, St. Helena, Yountville, Calistoga, Petaluma, Healdsburg, Sebastopol, Vacaville, Fairfield, Glen Ellen, Kenwood, and Windsor.

What is the $69.99 preventative maintenance inspection?

A visual and operational inspection from a JVG technician — no repairs, cleaning, or component replacements are included in this visit. We inspect the blower motor and fan, test the ignition system and pilot, verify safety controls and limit switches, inspect accessible gas piping for leaks or corrosion, inspect the venting system, check carbon monoxide levels with test instruments, examine the heat exchanger for visible cracks or damage, inspect the condenser coil, tighten accessible electrical connections, check thermostat operation, and test the full furnace cycle. You get a written assessment in plain language — no pressure, no upselling. Any repairs are quoted separately for your approval.

What are the new regulations for gas furnaces and water heaters in California?

California is moving away from gas-burning home appliances. Under the state's zero-emission appliance standards, new residential gas furnaces and gas water heaters are being phased out beginning in 2027, with electric heat pump models becoming the standard. Heat pump HVAC systems and heat pump water heaters meet the new rules — we install both and can help you plan the switch before the deadline so you're never caught off guard.

Are you licensed and insured?

Yes. Contractors License No. 1103018 with C-20 HVAC, C-10 Electrical, and B General Contractor classifications. Fully bonded and insured for residential work across California.

How much does a new HVAC system cost?

Most residential installations range from $6,000 to $15,000 depending on home size and system type. We start every install with a free in-home estimate — call (707) 531-9216 for a quote.

Do you offer same-day service?

Yes — same-day service is available for emergencies. Call or text (707) 531-9216 and we'll move you to the front of the line.

Do you handle electrical work?

Yes. Our C-10 Electrical license covers panel upgrades, new circuits, lighting, and general residential electrical repairs — so you don't have to call a separate electrician for HVAC projects.

Ready when you are.

Call or text. A real person answers — every time.

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Mon–Sat · 7am–7pm