The short answer
ClearSky Heating & Cooling serves Menlo Park, ZIP 94025, in San Mateo County, about 14 miles northwest of San Jose. We repair and install furnaces, AC, heat pumps and mini-splits, and handle maintenance, duct cleaning and indoor air quality.
Menlo Park is across the county line in San Mateo County, about 14 miles northwest of our San Jose base, and it covers the 94025 ZIP code. Being closer to the Bay than much of the South Bay, the city enjoys the milder end of the region's weather, and that has shaped its housing stock. Many homes were built around a gas furnace alone, with air conditioning either added later or never installed at all. ClearSky Heating & Cooling helps Menlo Park homeowners keep those furnaces running safely, add or upgrade cooling, and plan for the shift toward heat pumps that Bay Area rules are encouraging.
Heating does most of the work here
The Santa Clara Valley and the Peninsula share a Mediterranean pattern of dry summers and mild, damp winters, and areas near the Bay stay noticeably cooler in summer than the inland and southern parts of the valley. For a Menlo Park household, that usually means the furnace runs far more hours each year than the air conditioner.
Heavy heating use puts the focus on the parts that wear with every start: ignitors, flame sensors, inducer motors, pressure switches and blower bearings. It also makes safety checks important. During maintenance we inspect burners, venting and the heat exchanger, test for carbon monoxide at the appliance, and confirm the furnace is drawing combustion air properly. A furnace that runs every winter evening deserves that attention once a year.
Adding cooling to a home that never had it
Warm spells still arrive, and a house without cooling can get uncomfortable for days at a time, especially upstairs. Menlo Park homeowners who want to add cooling generally have three routes, and the right one depends on the ducts and the electrical service already in place.
- Add a central air conditioner to an existing furnace and duct system, if the ducts are sized and sealed well enough to carry cool air
- Replace the furnace with a heat pump, which heats and cools through the same ducts with one outdoor unit
- Install ductless mini-splits for bedrooms, home offices or upper floors, with no new ductwork
- Combine approaches, such as a central heat pump for the main floor and a mini-split for a converted attic or addition
Bay Area Air District rules still apply in San Mateo County
Menlo Park falls under the same Bay Area Air District appliance rules as the South Bay. Under Rule 9-4, natural gas furnaces manufactured from 2029 must meet a zero-NOx emission standard, which in practice points homeowners toward heat pumps when a furnace is replaced after that date. The rules do not require replacing working equipment; they apply only when an existing furnace or water heater fails or is replaced.
Water heaters have their own timeline. The zero-NOx date for small water heaters under Rule 9-6 was set for 2027, and the Air District Board is considering amendments in November 2026 that could delay it. If you are planning a water heater replacement, check the current rule first. We are happy to talk through how a heat pump for space heating fits alongside whatever you decide for hot water.
On money matters, the federal 25C credit covered qualifying heat pumps placed in service before December 31, 2025, and it is not available for new installations after that date. BayREN and your local clean energy provider may offer current heat pump incentives; amounts and availability change by funding cycle, so we confirm the current offer before quoting it.
Ducts and indoor air
Older duct systems in this part of the Peninsula often run through crawl spaces and attics with joints that have loosened over time. Leaks pull in dust and push conditioned air where nobody feels it. Duct cleaning, sealing and better filtration help, and they matter even more if you add cooling, since cool air is less forgiving of a leaky duct than warm air is.
Booking a visit in 94025
Menlo Park is a longer drive than our South Bay stops, so we plan routes to make the trip worthwhile and try to bring the parts a job is likely to need. When you call, describe what the system is doing, whether it is a furnace, AC, heat pump or mini-split, and its rough age. We also cover Mountain View, Los Altos and Sunnyvale on the way, and Newark and Fremont across the Bay.
ZIP codes we serve
- 94025