Few things wear you down like an air conditioner that can’t keep up when the California summer heat really settles in. At Galaxy Plumbing, Heating, AC & Solar, we provide AC installation and replacement in Oak Park, CA, and nearby areas, helping homeowners and businesses improve comfort by selecting equipment tailored to the property’s size, layout, and cooling needs. In fact, we take the guesswork out of upgrading your system, so you end up with steady, reliable cooling instead of another sweaty summer.
Galaxy Plumbing, Heating, AC & Solar is a family-run plumbing, heating, cooling, and solar contractor based in Oak Park, CA. Our EPA-certified, ESCO Institute-trained team specializes in sizing, installing, and replacing cooling systems for homes and businesses, from the first load calculation to the final thermostat setup.


The problem sneaks up on many homeowners. Your central air conditioning system runs longer and longer to hit the same temperature, some rooms never quite cool down, and the energy bills keep climbing even though nothing feels any cooler. Toss in frequent repairs, strange noises, and a unit that's pushing 15 years or more, and you've got a system that's telling you its days are numbered.
Several things drive an AC toward the end of the road. Refrigerant technology has changed over the years, so older units often run on types that are being phased out and cost a fortune to service. Worn compressors, corroded coils, and general age all chip away at the system's cooling performance, and once the repair bills start adding up faster than the unit is worth, pouring more money into it no longer makes sense. A system that was never sized correctly in the first place also struggles no matter how many fixes it gets.
When you're ready for a fresh start, our process keeps things straightforward. As an experienced air conditioning contractor, we begin with proper load calculations to size the new system for your home, because a unit that's too big or too small wastes energy and never feels quite right. From there, our team handles the full central AC replacement, removing and disposing of the old equipment before installing new condensers, coils, and air handlers, and then setting up your thermostat and testing everything to ensure it all runs as it should.
The payoff shows up fast. A proper air conditioning replacement cools your home evenly, runs more quietly, and uses far less energy than the tired unit it replaced, which means lower bills and fewer breakdowns. You get years of steady comfort out of the deal, plus the peace of mind that comes from work done right by a team that's been at this a long time.
Our team handles complete cooling upgrades with attention to equipment selection, building needs, everyday comfort, and long-term system care.

Good cooling starts with the people doing the work. Every installation we handle is carried out by EPA-certified technicians and ESCO Institute-trained professionals who know these systems inside and out.
Cooling needs vary widely between a family home and a busy storefront, and we can handle both. Our crew provides central AC installation for homes and commercial spaces, tailoring each job to the building it serves. Whatever the square footage, you can count on a system sized and installed to fit.
Cooling trouble doesn't always keep business hours, and neither do we. Around the clock, our team offers emergency service for those moments when the heat simply can't wait. One call gets help moving in your direction, day or night.
Swapping out a worn system opens the door to real comfort and savings. We handle complete replacements and upgrades designed for greater efficiency, including proper sizing, removal and disposal of the old equipment, and installation of new condensers, coils, and air handlers. Trusted by homeowners as one of the best air conditioning companies, we make the upgrade painless.
The right thermostat pulls the whole system together and puts you in control. Our team installs Nest thermostats, handles upgrades, and sets up smart thermostat integration so your cooling runs on your schedule. As your local air conditioning company, we make sure the tech side is dialed in before we leave.
Our family-run team brings practical experience, current training, and clear communication to every cooling project.
Four decades of serving Southern California have taught us to pair dependable workmanship with the respectful service people remember.
Qualified customers can ask us about current financing options when a larger cooling upgrade needs a little more room in the budget.
Our crew includes EPA-certified technicians, ESCO Institute-trained professionals, NEST technicians, A. O. Smith Water Heater Specialists, and Certified Navien Tankless Water Heater Installers.
A one-year full labor and parts warranty supports qualifying work after the installation is complete.
Small drips and faint gas odors can sneakily turn into real trouble down the line. Sorting out slab, pipe, and gas leaks is everyday work for us, and we pinpoint the source with careful detection before making repairs that are safe and up to code.
Stepping into a shower that's gone lukewarm is a rough way to kick off the day. Our water heater services cover repairs, flushing, and upgrades to efficient tankless units. With our Navien certification and A. O. Smith experience, we're comfortable with just about any system you've got.
Underground plumbing likes to stay quiet until the moment it decides to cause chaos. Sewer, drain, and repiping covers a lot of ground for us, from clearing a jammed main line to trenchless replacement and full repipes for homes with pipes long past their prime.
A furnace conking out during a cold stretch always seems to happen at the worst hour. Our heating services include repairs, new installations, seasonal tune-ups, and emergency calls, and we work on furnaces and heat pumps from nearly every brand.
Odd rattles and rooms that stay stuffy are your cooling system's way of asking for help. Our AC repair and maintenance services handle frozen coils, tired capacitors, worn fan motors, and clogged drain lines, plus the regular tune-ups that prevent minor issues from snowballing.
So much of how a home feels traces back to air drifting silently through the ducts. Our indoor air quality and duct services bring together duct cleaning and replacement, purifiers, upgraded filtration, and app-controlled roof sprinkler systems for a little added assurance.
A utility bill that keeps climbing has a way of making the sun look like a smart investment. Our solar services include panel installation, repair, and replacement for homes and businesses, as well as pool panels, Tesla Powerwall batteries, and backup power when the grid drops out.
Ventura County generally requires a mechanical permit for heating and air conditioning equipment, including condensers and ductwork. Your HVAC contractor should confirm the permit, energy code paperwork, and inspection requirements before starting AC installation or replacement.
A straightforward residential system changeout often takes one working day, while duct modifications, electrical updates, or equipment relocation can add time. The contractor should inspect the property first and explain the expected schedule before removing the existing system.
A contractor should calculate the home’s cooling load instead of simply matching the capacity listed on the old unit. The calculation considers square footage, insulation, windows, shade, local weather, ductwork, and other features that affect how much cooling the home needs.
Central AC works well when the home already has a separate heating system, whereas a heat pump can provide both heating and cooling from a single unit. An HVAC contractor can compare energy use, existing equipment, duct conditions, installation costs, and the home’s comfort needs before recommending either option.
Replacement may make more sense when an older AC needs frequent repairs, uses outdated refrigerant, cools unevenly, or costs much more to run than newer equipment. A smaller repair may still be worthwhile when the system remains in good overall condition, and the problem involves a single replaceable component.