Real questions Snohomish and King County homeowners ask us most, with a short answer up front and a link to the full explanation if you want the details.
Generators & Backup Power
Why can’t I just plug a generator into an outlet in my house?
Backfeeding a generator through a wall outlet can send power out onto lines utility crews believe are dead during an outage — a real danger to them and your equipment. A transfer switch prevents this by isolating your home from the grid first.
How much does it cost to install a whole-home standby generator?
Most fully installed systems in our service area run $12,000–$25,000, depending on generator size and what electrical or gas work your home needs.
Do I need a permit to install a whole-home generator?
Yes — a whole-home generator install requires an electrical permit and, depending on fuel source, often a gas permit too.
Is a Generac generator worth the investment?
For most homes in an outage-prone area, yes — but the right size and setup depends on your specific home and budget, which is worth a real assessment rather than guessing.
Electrical Panels & Wiring Safety
How do I know if my electrical panel needs to be upgraded?
Frequent breaker trips, a panel already crowded with double-tapped breakers, or one that hasn’t been evaluated in years are all signs worth having checked.
Is aluminum wiring in my home dangerous?
The wire itself usually isn’t the problem — the risk is at connection points where it can loosen and overheat over time. It’s a real, fixable issue, not a reason to panic.
Is knob and tube wiring illegal, and can I get insurance with it?
It’s not illegal to have in an existing home, but insurance coverage depends entirely on the carrier — some decline outright, some just want it addressed first.
Can I legally do my own electrical work in Washington?
Washington’s homeowner exemption allows some work on your own primary residence, but it only waives the license requirement — permits and inspections are still required.
Heating & Cooling
Do heat pumps actually work in cold weather here?
Yes — modern cold-climate heat pumps are certified to hold most of their heating capacity well below freezing, far colder than a typical Puget Sound winter actually gets.
Heat pump or furnace — which should I choose?
It depends on whether you want cooling built in, your home’s electrical capacity, and how long you plan to stay — there’s no universal right answer.
What heat pump rebates are available in Washington right now?
PSE offers $1,500 for hybrid systems, and Seattle’s Clean Heat Program and Energy Smart Eastside each offer up to $6,000 for oil-to-heat-pump conversions, depending on income and location.
Does my Seattle-area home actually need air conditioning?
Increasingly, many homeowners think so — recent heat waves and wildfire smoke seasons have changed the calculus for a region that historically didn’t need it.
How much does ductless mini-split installation cost in Seattle?
Typically $4,000–$9,000 for a single zone, scaling up from there depending on how many rooms you’re conditioning.
What air filter should I use during wildfire smoke season?
The EPA recommends MERV 13, or as high a rating as your system can handle without straining the blower — worth confirming with a pro before you upgrade.
Should I call an electrician or an HVAC company for a heating problem?
Homeowners often can’t tell which one they need — since Mauro Electric is licensed for both trades, we can evaluate and handle either in the same visit.
EV Charging
Do I need an electrician to install a home EV charger?
Yes — a Level 2 charger needs a dedicated circuit, and doing that incorrectly is a real fire and shock hazard. This is licensed electrical work.
Will my current electrical panel support an EV charger?
It depends on your panel’s existing capacity and what else draws power in your home — worth checking before you buy a charger, not after.
Permits, Licensing & Hiring
How do I find an electrician I can actually trust?
Confirm they’re licensed, ask if they pull permits when required, and look at real customer reviews — not just a polished website.
What happens if my electrical inspection doesn’t pass the first time?
You’ll get a correction notice explaining what to fix, then a follow-up inspection. It’s a normal part of the process, not a sign of a serious problem.
