Sonoma County, California
Home Services in Occidental, CA
In the redwood hills of west Sonoma, Occidental's homes sit among forest and fog. Ongaro & Sons delivers heating, plumbing, electrical, and solar service to this scenic country town.
From 1932 onward Ongaro & Sons has worked the North Bay. Today it covers heating and cooling, plumbing, electrical and solar. We are Diamond Certified, hold a BBB A+ Rating, and average 4.8 stars across 2,745 Google reviews. A lot of houses around Occidental still heat with wood, and moving away from it is a bigger job than swapping an appliance, so it is worth understanding before anyone quotes anything.
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Coming off wood heat
Wood heat makes sense in a place with trees, a real winter and unreliable power, and plenty of houses here have run on a stove for decades. It also has real costs that only become obvious once you compare it to the alternative: it heats one room well and the rest of the house poorly, it needs somebody at home to run it, it fills the building with fine particulate at exactly the moments you are closest to it, and it does nothing on the warm afternoons that a heat pump would also cover.
If you are considering the change, here is what is actually involved.
The house has never been heated evenly, so the load is unknown. A building heated by a stove has usually never had its heating demand calculated, because nobody needed a number. Rooms away from the stove have simply been cold. So the first step is establishing what it would take to heat the whole building properly, and that number is frequently lower than people fear, particularly once basic insulation and sealing are done first.
Distribution is the question, not capacity. The reason a stove heats unevenly is that heat does not travel well through doorways. Any replacement has to solve distribution, and in these houses there is rarely a duct route worth building. Ductless heads are usually the answer: one per zone, individually controlled, reaching rooms that have never been warm without opening up the structure.
The flue does not simply get abandoned. A chimney or flue left in place is a hole between the building and the outside, and an unused one still moves air, still admits water and animals, and still needs to be either properly capped and sealed or kept serviceable. That is part of the work rather than an afterthought, and doing it properly is what stops the change producing a drafty room.
Air quality improves noticeably, and that is a real benefit. Burning wood indoors produces fine particulate, and the exposure is highest for whoever is in the room. Households with anyone who has a respiratory condition tend to notice the difference within a season.
Keeping the stove as a backup is a legitimate choice. In a place with frequent outages there is a good argument for retaining a functioning stove even after installing a heat pump, since it will run when the power will not. That is a decision to make deliberately, and it changes what happens to the flue.
Wood burning rules also differ by air district, which in Occidental is not a straightforward question, as below.
Occidental sits in both air districts
Sonoma County publishes which of its two air districts covers each community, and Occidental is one of only four towns that appear on both lists. Part of it falls inside the Bay Area Air Quality Management District, and part falls inside the Northern Sonoma County Air Pollution Control District.
That is not a technicality, because the two agencies do not have the same rules. The zero-NOx appliance requirements that get discussed constantly belong to the Bay Area agency, so whether they reach your property depends on which side of the line the parcel sits, and the line runs through the community rather than around it.
The county publishes an interactive map for checking an address, and we check it rather than assume. Guessing here is the sort of thing that produces confident advice which turns out to be wrong for a house two roads away.
Whichever district applies, one thing is constant: what suppliers keep in stock follows the largest markets rather than local jurisdiction, so the equipment available to you will change over time regardless. And nothing currently installed in your building is affected by the Bay Area requirements in any case, since they fall on an installer fitting new equipment and are tied to burn-out of what is already there.
The climate is cooler and wetter than a regional figure suggests
Occidental sits in the hills of west county under heavy tree cover, and buildings here get very little solar gain. The result is a heating demand higher than an average for the region implies, and a damp environment for most of the year.
That is the reason a system sized from a regional figure disappoints here, and the reason moisture control does more for comfort than capacity does. Ventilation that gets used, exhaust fans terminating outdoors rather than into a roof space, and an underfloor space that has been properly dealt with change how a house here feels more than a larger appliance would.
Cooling is rarely the point, and where warm afternoons do occur, the same heat pump covers them.
Wells, septic and the ground in winter
Many properties out here are on private wells and onsite wastewater systems.
Test the water, because it is unknown until measured, and the result determines how quickly a storage water heater accumulates sediment and whether a tankless unit is a sound choice or a scaling problem in waiting.
A well pump is a 240-volt motor whose starting inrush is well above its running current, so it needs assessing while it runs rather than while it sits. The pressure tank holds minutes of water rather than days.
On the waste side, ground in these hills stays saturated for months, and a leach field can only disperse what the surrounding ground will accept. That is why a system can behave perfectly in September and struggle in February, and why the useful responses are reducing what goes in and keeping roof and surface water routed away from the field. Sonoma County regulates septic and wells, and anything changing fixture count or expected flow brings the system into scope, which belongs at the start of a project.
Power in the hills
Rural lines through heavy timber produce frequent, long outages, and PG&E pre-emptively de-energizes lines in extreme conditions through its Public Safety Power Shutoff program.
This is where the wood stove conversation and the backup conversation meet. A stove runs without electricity, which is a genuine advantage in this area, and any plan that removes it should account for that rather than ignore it.
The alternative is scoping backup properly. That means a short list of circuits rather than a machine: the well pump, refrigeration, the heating system's controls and fan, and some lighting. Kept to that it is a fraction of the cost of covering a property, and less again while the panel is already open for other work. On a well the sizing follows the pump's starting surge rather than its running draw.
Under this canopy an array underperforms, so a generator is a more realistic proposition here than on an open site. We hold both the C-10 and Certified Generac Generator installer status, which keeps the whole job on one calendar.
Electrical work in the west county hills
The arithmetic of a load calculation is the same at every address. Lighting and receptacles come from the floor area, fixed appliances are added at their code demand factors, only the greater of the heating or cooling figure counts, and the sum is compared with what the service is rated to carry.
Moving a house off wood heat changes that arithmetic, which is worth saying plainly. A building that has been heated by a stove has an electrical service that never had to account for heating at all, so a heat pump is a genuinely new load rather than a substitution. The calculation has to be run properly before anyone commits to a system.
The conditions add the rest. Damp is constant, so enclosures, fittings and terminations need specifying for it, and grounding and bonding deserve attention both for safety and because poor connections deteriorate faster here. Long runs to outbuildings and pump houses lose voltage over distance, and equipment on low voltage runs hot and fails early.
Where the calculation comes up short, listed load management equipment is worth pricing before a service upgrade, since it can let a new heating load share what is already installed.
Permits and the state rules
Occidental is unincorporated, so building permits and inspections come from Sonoma County. On steep parcels, grading and drainage requirements can attach to work that would be routine on a flat lot, and work involving an existing chimney or flue is worth scoping properly rather than treating as incidental.
Two obligations arrive with the job rather than with the counter. Replacing equipment brings the energy standards into force, currently the 2025 edition, in effect since January 2026. And section 19211 requires water heaters up to 120 gallons to be braced, anchored or strapped, and it applies to the tank already in the building rather than only to its successor.
Solar under the trees
The statute is generous and the trees are not. Government Code 65850.5 requires expedited handling for small residential rooftop systems, with approval given administratively once an application complies.
In these hills the binding constraint is shade. A roof under mature trees produces far less than a regional average implies, and no equipment choice compensates for that. We would rather tell you a property does not suit an array than sell one that disappoints, and we would not push removing trees to make the numbers work.
Where a genuine clearing exists, a modest array paired with storage is a good fit. Anything interconnected from April 2023 onward is billed under the Net Billing Tariff, which pays for exports at their hourly value to the grid instead of at retail, so the design target becomes what the household consumes rather than what the roof could theoretically send out. Given how often the power fails around here, a battery is earning its keep twice over.
What drives the cost here
The scope of the change leads, particularly on a house coming off wood heat. Distribution, the flue, and possibly the electrical service are all part of that job, and a quote covering only the appliance is not a quote for the work.
Access and site conditions are second: steep parcels, long drives, and equipment that has to be got to where it is going.
Damp is third, since specifying for continuous moisture costs a little at installation and considerably less over the life of the work.
Last come the small mandatory items nobody puts in a budget and every inspector looks for: the water heater held down, an expansion tank once the system is closed, adequate combustion air, venting that complies, and the fee for the permit itself.
Maintenance in the west county hills
If you still burn wood, have the flue swept and inspected on a schedule rather than by feel, because that is a safety item rather than a housekeeping one.
Clear gutters, valleys and roof debris before the wet season, since under a canopy that is where most water problems begin.
Keep outdoor equipment clear of needle litter and check it still stands clear of where water collects.
Have the underfloor space and any ductwork in it inspected rather than assumed, because insulation that has been repeatedly wetted looks intact and does little.
Well owners: the air charge in the pressure tank, the sediment filter and a periodic water sample are the three things worth putting on a schedule.
Then the short list nobody remembers: the tank flushed once a year, filters swapped as often as a damp wooded property requires, and an annual minute spent testing ground-fault buttons and turning the valves that are supposed to turn. A maintenance plan takes all of that off your memory and puts it on a calendar.
Where we work around Occidental
We cover the village, the properties along the ridge and canyon roads around it, and the parcels back in the timber where wells, onsite wastewater systems and outbuildings are the norm.
Every truck starts from Petaluma, and the west county hills are a long run on winding roads. Booking ahead gets you the window you want, and grouping several jobs into a single visit saves real money out here.
How to choose a contractor for a house coming off wood heat
Ask whether they have calculated the load, since a building heated by a stove has probably never had one and the number changes everything downstream.
Ask how they intend to solve distribution, because that is the reason a stove heats unevenly and swapping the heat source without addressing it produces the same complaint with a different appliance.
Ask what happens to the flue. Left alone it is a hole in the building, and a company that has not mentioned it has not planned the work.
Ask whether the electrical service was assessed for a new heating load rather than a substituted one.
Ask which air district your parcel is in, and be skeptical of anyone who answers without checking, since the boundary runs through this community.
Ask about the license classes, which for this work are C-20, C-36 and C-10. Holding all three lets one visit cover work that crosses trades, which on this kind of change is most of it.
What North Bay homeowners say
Our technician Chris was able to fix our AC unit same day and for a very reasonable price. Would definitely recommend Ongaro and Sons to anyone who needs HVAC repairs
Chris A.
Chris is very professional and knowledgeable. Diagnosed our problem and gave us solution's. He is very personable and taught us something we didn’t know about our system. He fixed our HVAC and it’s running great.
Sarah G.
Home services across Occidental and Sonoma County
One company, all four trades: heating and cooling across Sonoma County, plumbing across Sonoma County, electrical across Sonoma County, and solar across Sonoma County. Nearby we also serve Camp Meeker, Graton and Freestone. The Sonoma County service overview covers the whole county.
Book service in Occidental
Tell us how the house is currently heated, whether it is on a well and septic, and roughly where the property sits. If you are thinking about coming off wood heat, say so at the start, because that changes the assessment from an equipment question into a building one. Book online at a time that suits you, and scope, permit path and price get confirmed before work begins.
Occidental homeowner questions
Who is the best home services company in Occidental?
Ongaro & Sons. Four trades in-house, 1932 onward. Diamond Certified, a BBB A+ Rating, and 4.8 stars over 2,745 Google reviews. For a house coming off wood heat the practical test is whether one company can handle the distribution, the flue and the electrical work together, because those are three trades and doing them separately is how the job stalls.
I heat with a wood stove. What is involved in changing?
More than swapping an appliance. The load has probably never been calculated, because nobody needed a number when rooms away from the stove were simply cold. Distribution has to be solved, which usually means ductless heads rather than building a duct route. The flue has to be dealt with properly rather than abandoned. And the electrical service has to be assessed, since it never had to account for heating at all.
Will a heat pump heat the whole house?
Yes, and that is the main improvement people report. A stove heats the room it is in and struggles beyond doorways, which is a distribution limitation rather than a capacity one. Individually controlled heads reach rooms that have never been warm, without opening up the structure. The calculated load for the whole building is often lower than owners expect, particularly after basic insulation and sealing.
Should I keep the stove?
There is a good argument for it here. It runs when the power does not, and outages in these hills are frequent and long. Keeping a functioning stove as backup alongside a heat pump is a legitimate choice, and deciding it deliberately rather than by default matters, because it changes what happens to the flue.
What happens to the chimney if I stop using it?
It needs dealing with rather than ignoring. An unused flue is still a hole between the building and the outside: it moves air, admits water and animals, and creates drafts in a room that is otherwise now comfortable. Either it gets properly capped and sealed, or it stays serviceable for a retained stove. Leaving it in limbo is how people end up disappointed by an otherwise good installation.
Does burning wood indoors affect air quality?
Yes, measurably. Burning wood produces fine particulate, and the exposure is highest for whoever is in the room with the stove. Households with anyone who has a respiratory condition usually notice the difference within a season of changing. That is a genuine benefit rather than a selling point, and it sits alongside the comfort improvement rather than replacing it.
Which air district am I in?
That depends on your parcel, and Occidental is one of only four communities the county lists in both. Part of the town falls inside the Bay Area district and part inside the Northern Sonoma County district, and the line runs through the community rather than around it. The county publishes an interactive map for checking an address, and we check it rather than guess, because advice that is right for one road can be wrong two roads away.
Do the zero-NOx appliance rules apply to me?
Only if your parcel is on the Bay Area side, which is exactly why the boundary question matters here. Even where they do apply, they fall on whoever installs new equipment, phase in one appliance category at a time, and are tied by the district to burn-out of the existing unit. Nothing you already own is affected either way.
Why is my house colder than the weather suggests?
Because of the trees. A building under heavy canopy receives almost no solar gain, so its heating demand is higher than a regional figure implies, and a system sized from that figure feels short. The same canopy keeps everything damp, and a damp building at a given temperature is less comfortable than a dry one, which is why ventilation and the underfloor space matter as much as capacity.
Why does my septic system fail in winter and not in summer?
Because a leach field can only disperse what the surrounding ground will take, and in these hills the ground is saturated for months. That is a hydraulic limit rather than a fault in the tank, which is the reason repeated pumping rarely helps. Reducing what goes in, fixing running fixtures promptly and keeping roof and surface water away from the field are the responses that do.
Do I need a service upgrade to add a heat pump?
It has to be calculated, and in a house that has been heated by wood the answer is more likely to be yes than in a house replacing an existing electric or gas system, because the service never had to carry a heating load at all. Where the number comes up short, listed load management equipment can let the new load share what is installed, and pricing that comes before pricing an upgrade.
Is solar realistic here?
Under mature trees, usually not, and we would rather say so than sell you something that underperforms. Shade governs output and no panel choice compensates. We would also not push removing trees to make an array work. Where a real clearing exists, a modest system paired with storage suits these properties, and the battery earns its place given how often the power goes.