No matter what's going wrong with your heating or cooling, we have the experience and equipment to handle it. We cover the full scope of everyday HVAC work: AC repair and service, furnace repair and replacement, heat pump service and installation, full system replacement, ductwork repair and sealing, thermostat and smart-control upgrades, indoor air quality improvements, seasonal tune-ups, and emergency response when your system goes down without warning. All work is performed by qualified HVAC technicians who take the job seriously from the first call to the final walkthrough. We'll get your home comfortable again fast.
When your AC stops working, blows warm air, short-cycles, or simply can't keep up on a hot Sonoma County afternoon, we want to hear from you. A service visit starts with a thorough diagnosis so we know exactly what is causing the problem before any work begins. We offer same-day AC repair for urgent situations, and we carry common parts so we can often complete the repair in a single visit. Whether it is a refrigerant issue, a failed capacitor, a compressor problem, or something less obvious, we track down the problem fast. Call for a quote before we head out.
A furnace that stops working, blows cold air, or refuses to respond to the thermostat is a problem that needs attention right away, especially during a cold stretch in Windsor. We diagnose and repair gas furnaces for both homes and light-commercial spaces, and we can tell you honestly whether a repair makes sense or whether a replacement would serve you better. If your system is aging out, we handle new furnace installation as well. Our technicians approach every heating call with a practical eye and a straight answer.
Heat pumps handle both heating and cooling in a single system, which makes them a natural fit for Windsor's mild climate. When a heat pump stops heating, stops cooling, or behaves erratically, we diagnose the issue and get it running again. We also install new heat pump systems for homeowners who are replacing aging equipment or switching from separate heating and cooling units. If you are not sure whether a heat pump is the right choice for your home, call us and we will walk you through it.
Ductless mini-split systems work well in homes that have no existing ductwork, in room additions, in converted garages, or in any space where running ducts is not practical. We install and service multi-zone and single-zone ductless systems, and we can assess your space to help you choose the right setup. This section connects closely to the first-time cooling installs we discuss below, because ductless is often the most efficient path for Windsor homes that were built without central air.
When a system is aging, breaking down repeatedly, or simply not keeping up, replacement is often the smarter investment. We handle full HVAC system replacement and new installation for homes and commercial properties throughout the area. That includes sizing the new system correctly for your space, removing the old equipment, and completing the installation so everything runs the way it should from day one. We serve offices, retail spaces, rental properties, and residential homes, and we can work around your schedule to minimize disruption.
A thermostat that is not working correctly can make a perfectly good HVAC system behave poorly. We install and replace thermostats of all types, including programmable models and smart thermostats like Nest and Ecobee. A smart thermostat gives you better control over your comfort and your energy use, and the installation is straightforward. We handle the low-voltage control wiring on the HVAC equipment side so everything communicates correctly.
Leaky or damaged ductwork is one of the most common reasons a home has uneven temperatures or high energy bills. When air escapes through gaps and poorly sealed connections before it reaches the rooms you are trying to condition, the system works harder and delivers less. We inspect, repair, and seal ductwork to restore proper airflow and improve efficiency. If your ducts need replacement, we handle that too. Tight, well-sealed ducts make a real difference in how well your system performs.
The air inside your home matters, and your HVAC system plays a direct role in how clean it is. We install whole-home air purifiers, air scrubbers, UV light systems, and upgraded filtration to improve what you are breathing every day. This is especially relevant in Windsor and across Sonoma County during wildfire season, when outdoor air quality can deteriorate quickly. We will cover the smoke-filtration topic in more detail below, but if indoor air quality is already a concern for your household, call us to talk through your options.
A well-maintained HVAC system lasts longer, runs more efficiently, and is less likely to fail at the worst possible moment. We offer spring and fall service visits, annual checkups, AC tune-ups, and furnace maintenance for homeowners and property managers who want to stay ahead of problems rather than react to them. No pressure and no gimmicks, just reliable comfort and an honest assessment of how your system is performing. Call today and we'll set up your appointment.
Whether it's a one-time repair or a full system replacement, we understand that some HVAC problems cannot wait. No heat on a cold Windsor night, no cooling during a summer heat wave, a system that shuts off without warning, unusual noises, or a thermostat that has stopped responding entirely, these are the calls we are ready for. We offer same-day service and emergency response because comfort problems do not follow a convenient schedule. Prompt response, even for last-minute comfort calls, is something we take seriously.
Local crew. Real technician on the phone. Quick to respond.
When something goes wrong, call (707) 892-4623 and we will get someone out to you.
From aging systems to brand-new installs, the work we do here is shaped by where we are. Windsor's warm, dry summers, mild winters, and recurring wildfire-smoke events create HVAC needs that are specific to this part of Northern California. Homes that were built decades ago without central air are now adding cooling for the first time. Homeowners are moving toward heat pumps as a practical all-in-one upgrade. And every fire season reminds residents why indoor air filtration matters. We live and work in this community, and our work shows it.
A large share of Windsor homes were built during an era when the mild marine climate made air conditioning seem unnecessary. That calculation has changed after recent record heat events across Sonoma County. If your home has never had central air, or if you have a room or addition that is not connected to your existing system, this is the conversation to have now.
We assess your home, discuss whether central AC or a ductless mini-split system makes more sense for your layout and budget, and handle the full installation from equipment selection through startup. Ductless systems are often the faster and less invasive path for homes without existing ductwork. Central AC makes sense when you already have ducts in good condition. Either way, we size the equipment correctly for your space so you get the comfort you are paying for.
Wildfire smoke is a real and recurring concern in Windsor and throughout Sonoma County. When air quality drops during fire season, the air inside your home can be nearly as problematic as the air outside, unless your HVAC system is equipped to handle it.
MERV-13 and higher-rated filters capture fine smoke particles that standard residential filters let through. We assess your existing HVAC system to determine whether it can support a MERV-13 filter without restricting airflow, and we recommend the right combination of upgraded filtration, whole-home air purifiers, or air scrubbers based on your equipment and your home's layout. We protect your floors and finishes while we work, and we leave the space clean when we are done.
Heat pump electrification is the upgrade many Windsor homeowners are actively thinking about. A heat pump replaces both your furnace and your air conditioner in a single system. It heats in winter and cools in summer, and it runs on electricity rather than gas, which reduces your reliance on a gas furnace over time.
Windsor's mild winters are well-suited to heat pump performance. Modern heat pump systems handle the temperature range here without difficulty, and they are more efficient than older separate systems in many cases. We handle the full installation, from removing the old equipment to commissioning the new system and confirming it runs correctly. We'll get your home comfortable again fast.
Scheduling an HVAC tech shouldn't be complicated. Neither should getting a straight answer about what something costs. We do not believe in vague estimates or surprise charges. When you call us, we gather the details about your system and your situation, and we give you a real number for your specific job, not a generic range pulled from a website.
Every HVAC job is a little different. Repair costs depend on what failed and what it takes to fix it. Replacement costs depend on the equipment, the installation complexity, and the size of your home or building. Duct sealing costs depend on what we find when we inspect the system. The only way to get an accurate number is to have someone who knows the work take a look.
Call (707) 892-4623 for a quote. We will give you honest pricing with no pressure attached.
Doing HVAC work right matters, and we'll help you get it right, whether you are a homeowner dealing with a system that has seen better days, a landlord managing a rental property, or a business owner keeping a commercial space comfortable for employees and customers.
We have been doing this work in Windsor and the surrounding area since 2004. That is more than two decades of HVAC service in Sonoma County, building the kind of reputation that comes from showing up, doing the job correctly, and treating people fairly. We serve Windsor and the communities around it: Healdsburg, Cloverdale, Guerneville, Sebastopol, Santa Rosa, Rohnert Park, and Petaluma.
Our technicians are the people who answer the phone and show up at your door. Work performed by qualified HVAC technicians is our standard on every job, residential or commercial, repair or replacement. Simple booking. Clear pricing. Reliable, lasting comfort.
Call us at (707) 892-4623 and describe what your system is doing. We will ask a few questions to understand the situation and get the right technician on the schedule. Same-day availability is often possible for urgent heating and cooling calls in Windsor and the surrounding Sonoma County area.
When you call, we gather details about your system and your situation before scheduling. A qualified HVAC technician arrives, inspects the equipment, and explains exactly what is wrong and what the repair involves before any work begins. Once you approve the estimate, we complete the job and leave the space clean.
For urgent situations, same-day service is often available. We also offer emergency response for no-heat and no-cool situations that cannot wait for a regular appointment window. When you call (707) 892-4623, we will give you an honest answer about how soon we can get someone to you.
Call us at (707) 892-4623 and walk us through what is going on. We gather the details about your system and your situation, and we give you a real number for your specific job before any work begins. We do not quote vague ranges and then adjust at the door.
We give you an estimate before work begins, and we do not proceed until you understand the plan and the cost. If something unexpected comes up once we are into the job, we tell you before we continue, not after the invoice is written. Our goal is no surprises when the work is done.
The scope of any HVAC job depends on what we find when we inspect the system. A repair that looks straightforward can turn out to involve a failed secondary component, a refrigerant leak, or ductwork damage that was not visible from the outside. We explain what we find and what it costs to address before we move forward.
We give you a clear estimate based on what we find during the inspection. If the scope is well-defined, the number is solid. If there is a possibility the work could expand once we are into it, we tell you that upfront so you are not caught off guard. Honest pricing is how we operate.
A repair makes sense when the system is relatively young, the component that failed is not central to the unit's longevity, and the cost is reasonable relative to the system's remaining life. Replacement makes more sense when the system is over 15 years old, has broken down multiple times, or is struggling to hold temperature even when it is running. We give you an honest read on which path makes more sense for your situation.
Yes. We work with single-family homeowners, landlords, property managers overseeing multiple units, and small commercial clients including offices, retail spaces, and restaurants throughout Windsor and Sonoma County. The equipment and load requirements differ, but the standard of work is the same on every job.
Devco Heating and Air Conditioning is ready to help with whatever your heating or cooling system needs. Same-day and emergency service are available for urgent situations. We serve Windsor and communities throughout Sonoma County, and we are here when you need us.
Call (707) 892-4623 for a quote. We will get you scheduled and get the job done right.
We handle the full range of heating and cooling work for Windsor homes, rental properties, and commercial spaces throughout Sonoma County. From a quick AC repair to a full heat pump electrification project, every job gets the same careful attention from start to finish. The table below lays out what each service covers, who it fits best, and a practical note to help you figure out where to start. Call us when you are ready and we will get you scheduled.
| Service Type | What's Included | Best Suited For | Helpful Details |
|---|---|---|---|
| Seasonal Maintenance & Tune-Ups |
| Homeowners and property managers who want to stay ahead of breakdowns | Regular maintenance extends equipment life and catches small problems before they become expensive ones |
| Ductwork Repair & Sealing |
| Homes with uneven temperatures, high energy bills, or weak airflow in certain rooms | Leaky ducts are one of the most common hidden reasons a system works harder than it should |
| First-Time AC & Ductless Cooling Installation |
| Windsor homes built without central air that are adding cooling for the first time | Ductless mini-splits are often the faster, less invasive path for homes without existing ductwork |
| Heat Pump Electrification |
| Homeowners ready to replace separate heating and cooling systems with a single electric heat pump | Modern heat pumps handle Windsor's temperature range well and are more efficient than older split systems in many cases |
| Indoor Air Quality & Air Filtration |
| Households concerned about allergens, dust, or smoke particles in the air they breathe | Especially relevant in Sonoma County during wildfire season when outdoor air quality drops quickly |
| Wildfire-Smoke Air Filtration (MERV-13+) |
| Sonoma County households that want cleaner indoor air during fire season | Standard residential filters do not capture fine smoke particles; we assess your system before recommending an upgrade |
| Ductless Mini-Split Installation |
| Room additions, converted garages, or any space where running ducts is not practical | Mini-splits condition individual zones independently, which can reduce energy use in spaces that are not always occupied |
| Heat Pump Repair & Installation |
| Homeowners with an all-in-one heating and cooling system that has stopped working correctly | Windsor's mild winters are well-suited to heat pump performance year-round |
| Full System Installation & ReplacementMost Popular |
| Homes or commercial spaces with aging, frequently failing, or undersized HVAC equipment | Correct sizing from the start prevents short-cycling and uneven comfort; we handle residential and commercial jobs |
| Heating & Furnace Repair |
| Homes or light-commercial spaces that have lost heat or are blowing cold air | We give you an honest repair-versus-replace assessment before any work begins |
| AC Repair & Service |
| Homeowners whose AC has stopped cooling or is short-cycling | Same-day availability for urgent no-cool situations; we carry common parts to finish most repairs in one visit |
| Emergency HVAC Service |
| Any situation where the system has gone down and waiting is not an option | Call us and we will give you an honest answer about how soon we can get someone to you |
| Thermostat & Smart-Control Installation |
| Homeowners who want better control over comfort and energy use | A smart thermostat like Nest or Ecobee can improve how your system responds without replacing the equipment |
How do I know whether my system needs a repair or a full replacement?
Age and repair history are the two biggest factors. If your system is under 12 to 15 years old and has not needed frequent repairs, a targeted fix usually makes sense. If it is older, has broken down more than once in recent seasons, or is struggling to hold temperature even when it is running, replacement is often the smarter investment. We walk you through both options and give you our honest read before any work begins.
What are common signs that my AC or furnace is starting to fail?
For an air conditioner, watch for warm air from the vents, short cycling on and off, unusually high energy bills, ice forming on the unit, or strange noises during operation. For a furnace, signs include cold air blowing from the vents, the system failing to ignite, uneven heat across rooms, or a burner that keeps shutting off. Any of these is worth a call so we can take a look before a small problem becomes a larger one.
Why is one room in my home hotter or colder than the rest?
Uneven temperatures usually point to one of a few causes: leaky or undersized ductwork, a blocked or closed vent, a system that is not sized correctly for the home, or a zone control issue. We inspect the system and the ductwork to find out what is actually happening rather than guessing. In some cases, a ductless mini-split added to the problem room is the most practical fix.
Same-Day and Emergency Availability
When your heating or cooling system goes down, we make it a priority to get someone out to you quickly. Same-day service is often available, and we respond to emergency no-heat and no-cool calls because comfort problems do not follow a convenient schedule.
What does a seasonal tune-up actually include?
A tune-up is a thorough inspection and service visit, not just a filter swap. For a cooling tune-up, we check refrigerant levels, inspect the coil and condenser, test electrical components, verify airflow, and confirm the thermostat is communicating correctly. For a heating tune-up, we inspect the heat exchanger, test ignition and burner operation, check the flue, and look at the blower and controls. The goal is to catch anything that could cause a breakdown before it does.
How often should I schedule HVAC maintenance?
Once a year at minimum, and twice a year if you are running both heating and cooling equipment through the seasons. A spring visit before cooling season and a fall visit before heating season is the standard we recommend. Regular maintenance keeps the system running efficiently, extends its useful life, and gives us a chance to catch small issues before they turn into emergency calls.
What can strange noises from my HVAC unit mean?
Different noises point to different problems. A banging or clanking sound often means a loose or broken component inside the unit. A high-pitched squealing can indicate a worn blower belt or a bearing that is starting to fail. Clicking at startup or shutdown is usually normal, but clicking that continues during operation can signal a relay or control problem. Grinding noises are worth taking seriously right away. If something sounds wrong, call us so we can diagnose it before it causes further damage.
Transparent Upfront Pricing
We gather the details about your system and your situation before quoting, and we give you a real number for your specific job before any work begins. If something unexpected comes up once we are into the job, we tell you before we continue.
How do ductwork leaks affect my energy bills and comfort?
When conditioned air escapes through gaps in your ductwork before it reaches the rooms you are trying to heat or cool, your system has to run longer to compensate. That means higher energy bills and uneven comfort throughout the home. In some cases, duct leakage is significant enough that sealing the ducts delivers a noticeable improvement in both comfort and efficiency without replacing any equipment.
Is same-day or emergency service available for no-heat or no-cool situations?
Yes. We offer same-day service for urgent heating and cooling situations, and emergency response when the system has gone down and waiting is not an option. When you call, we will ask a few questions to understand what is happening and give you an honest estimate of how quickly we can get someone to you.
Clean and Respectful Workmanship
We protect your floors and finishes while we work, and we leave the space clean when we are done. Work performed by qualified HVAC technicians is our standard on every job, whether it is a quick repair or a full system replacement.
Do I need to be home when the technician comes out?
For most service calls and installations, yes, someone should be home to provide access to the equipment and to hear the technician's findings and recommendations. If you manage a rental property and need to coordinate access differently, let us know when you call and we will work out a practical arrangement.
What does upgrading to a smart thermostat actually involve?
We assess whether your existing HVAC system is compatible with the smart thermostat you are considering, handle the low-voltage control wiring on the equipment side, and configure the new thermostat so it communicates correctly with your system. Most installations are straightforward and completed in a single visit. A smart thermostat gives you better scheduling control and can help the system respond more efficiently to how you actually use your home.
Why is wildfire-smoke air filtration worth thinking about in Windsor?
During fire season, fine smoke particles can move through a standard residential filter and circulate through your home. MERV-13 and higher-rated filters are designed to capture those smaller particles, but not every HVAC system can handle the added resistance without losing airflow. We assess your equipment first, then recommend the right combination of upgraded filtration, whole-home air purifiers, or air scrubbers based on what your system can support and what your household needs.
Call us at (707) 892-4623 and we will help you figure out exactly what your system needs and get you scheduled.
(707) 892-4623