The Napa Comfort Report
Plain-language guides for the towns we serve.
Guide · 12-minute read
California's 2027 Gas Furnace Phase-Out: A Plain-Language Guide for Napa Homeowners
What the zero-emission rules actually say, what they don't, heat pumps explained honestly, real costs, and a calm timeline for planning your switch.
Read the guide →Local Guide · Napa
The Napa Homeowner's Complete HVAC Guide
What 25 years inside our hometown's homes taught us — Old Town Victorians to Browns Valley, season by season.
Read the guide →Local Guide · Sonoma
Keeping a Historic Sonoma Home Comfortable
Retrofits that respect old houses, valley-heat cooling, and the three renovation sins we undo most often.
Read the guide →Local Guide · St. Helena
Multi-Zone Comfort: Estate & Guest-House HVAC
How zoned systems fail quietly, guest quarters that must be perfect, and property-scale planning for wine country.
Read the guide →Local Guide · Yountville
Small-Lot Comfort: Quiet, Neighborly HVAC
Placement, noise, and hosting-ready comfort for a town where everything is close together and standards are high.
Read the guide →Local Guide · Calistoga
Surviving the Valley's Hottest Summers
The cooling playbook for the top of the valley — heat-wave operations, vintage cottages, and shade that pays.
Read the guide →Local Guide · Petaluma
Fog-Belt Comfort: A Heating-First Strategy
The Gap flips the script: heating carries the year, moisture is the enemy, and October is the month that matters.
Read the guide →Local Guide · Healdsburg
North County Heat: The Cooling Playbook
Above the fog line where summers pass 100° — plaza homes, hillside builds, guest units, and harvest-season stakes.
Read the guide →Local Guide · Sebastopol
Damp-Climate HVAC for Apple Country
What the fog leaves behind: corrosion, safety stakes, and the moisture-first maintenance rhythm west county demands.
Read the guide →Local Guide · Vacaville
100-Degree Summers: The A/C Survival Guide
Inland heat that fails systems by load, not age — tract-home patterns, heat-wave operations, and commuter playbooks.
Read the guide →Local Guide · Fairfield
Wind, Dust & Heat: The Maintenance Guide
The Suisun winds file down equipment year-round. Coil care, neighborhood patterns, and the almanac of living with it.
Read the guide →Local Guide · Glen Ellen
HVAC in the Trees
Comfort under the canopy — debris, damp shade, rural practicalities, and the storm-and-outage drill, written down.
Read the guide →Local Guide · Kenwood
The Small-Town Guide to Good HVAC Service
Why small towns get leftovers, how routed service fixes it, and the patchwork-property decision guide.
Read the guide →Local Guide · Windsor
When a Neighborhood's HVAC Ages at Once
Boom-era systems retiring in waves — reading the street's forecast and meeting it with a plan instead of a panic.
Read the guide →Claim the $69.99 Special
Book your maintenance inspection.
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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.
Mon–Sat · 7am–7pm