Residential only
When the heat quits in January or the house won't cool in July, the first job is finding out what actually went wrong. The owner does the diagnosis himself — measurements, readings and a plain explanation of the cause — and then you get practical options. Repair when repair makes sense. Replace when replacement makes sense. There is no commissioned salesperson in the middle of that conversation and no replacement quota driving it.
No heat? Call us at 253-314-1936. We take emergency and no-heat calls.
Symptoms
These are the descriptions we hear most often around Tacoma and Pierce County. Each one has several possible causes, which is exactly why the visit starts with diagnosis. Please don't open sealed equipment, work on gas or refrigerant lines, or bypass a safety control to keep a system running.
The system runs but blows cool air, or nothing starts at all. Causes range from ignition and flame-sensing faults on a furnace to defrost, charge or auxiliary-heat staging problems on a heat pump. Safe things to check first: thermostat setting and batteries, the breaker, and whether the filter is badly clogged.
The house never reaches setpoint in a heat wave, or the outdoor unit hums without cooling. Charge, a capacitor or contactor, a condenser fan, condensate faults and coils packed with needles and moss are the usual suspects on central air conditioning and heat pumps alike.
A cold bonus room, a hot upstairs, or a daylight basement the system never reaches is often a duct, airflow or sizing issue rather than a broken part. In houses without ductwork, a ductless mini-split is sometimes the practical fix instead of a repair.
Registers barely moving air usually points to a restricted filter, a dirty blower wheel or evaporator coil, a failing blower motor, or duct problems. Replacing the filter is a safe homeowner step; the rest gets measured rather than guessed at.
Grinding, screeching, rattling, buzzing or a boom on ignition each suggest different causes — bearings, loose panels and blower balance, electrical components, or delayed ignition. If you smell gas, leave the house and call your gas utility from a safe location first.
Equipment that starts and stops every few minutes wastes energy and wears parts. It can be airflow restriction, a tripping limit or pressure switch, thermostat placement, charge, or equipment that was oversized for the house when it was installed.
How a service call goes
The same symptom can have several different causes, so the visit starts with what the equipment is doing rather than a guess. Depending on the system that usually means verifying the thermostat and control signal, confirming power and safeties, reading temperature split and static pressure, checking filters and airflow, inspecting the condensate path, and — on refrigerant systems — taking pressures and superheat or subcooling instead of assuming a leak.
You get the findings, the underlying cause where it can be established, and the realistic options — including what happens if you wait a season. Some faults are a part; some are a design or installation problem that a part won't solve; some are genuinely end-of-life. We'll say which one it looks like and why, and you decide from there.
A capacitor, contactor, ignitor, flame sensor, sensor, control board, blower motor or a cleaned coil is usually worth doing. A failed compressor in an aging system on a discontinued refrigerant usually is not. Repair-first doesn't mean patching something that will strand you next winter — it means the recommendation follows the condition of the equipment, not a sales script.
Dreadnought stands behind its own workmanship, subject to project and equipment conditions. We don't extend that to customer-supplied, DIY or partially installed equipment. Where electrical or another trade is required, we work with licensed, bonded and insured trade partners, and permitting is handled as required for the project.
By system
Furnaces here idle most of the year and then get leaned on hard from November through February — which is when ignitors, flame sensors, pressure switches, limit switches and blower motors surface. Short-cycling and cold rooms are as often an airflow or duct problem as a furnace problem. More on furnace repair & replacement. (We do not promote oil furnace work.)
Weak heat in a cold snap can be defrost control, a sensor, drifted charge, auxiliary heat that isn't staging, or an outdoor coil packed with fir needles and moss in a damp shaded yard. Those look alike from the thermostat and very different on a gauge set. More on heat pump repair & installation.
Mini-split faults tend to be communication and sensor errors, dirty blower wheels and filters, condensate drainage, or line-set and commissioning issues left over from the original install. More on ductless mini-split systems.
No-cool calls usually trace to charge, a capacitor or contactor, a condenser fan, a clogged condensate path or a restricted coil. Systems that coasted for years often fail in the first real heat wave. More on AC repair & installation in Tacoma.
If the diagnosis points to replacement, pricing follows an on-site evaluation — every home is different, so we don't publish flat prices. Projects needing substantial measurement, calculations and system design may carry a paid design or assessment fee; eligible design fees may be credited toward the project if Dreadnought performs the installation, subject to the proposal.
Common questions
Start with the thermostat: confirm it's in the right mode and set a few degrees above or below the room temperature. Make sure the breaker or disconnect hasn't tripped, but don't keep resetting it if it trips again. Check whether the filter is visibly dirty and whether furniture or drapes are blocking vents or registers. If you smell gas or rotten eggs, leave the house and call your gas utility or emergency services from outside — don't operate switches or investigate the appliance yourself.
Short cycling — turning on and off too quickly — can come from restricted airflow, an oversized system, a thermostat in a bad location, or a safety control doing its job because something else is wrong. During a diagnostic visit we measure temperature split, static pressure and amp draws to see whether the cause is a component, a duct problem, or a system that was never sized properly for the house.
Squealing or grinding often points to a motor or blower issue; rattling can be a loose panel or duct; a boom at startup can indicate a gas-ignition problem. A musty smell may mean the condensate path or coil needs attention, while a sharp chemical or rotten-egg odor needs immediate attention and the system turned off. We don't recommend removing covers, resetting limits, or bypassing safety controls — that's what the diagnostic visit is for.
The decision follows the actual condition of the equipment, not a sales target. We look at the failure type, the age of the system, whether the refrigerant is obsolete or hard to source, prior repair history, and whether the house has comfort problems the current system never solved. A capacitor, contactor, ignitor, flame sensor or control board is usually worth repairing; a failed compressor or cracked heat exchanger in an aging system usually points toward replacement. You get the findings and the options, and you decide.
If you can find the model and serial number without opening anything, great — a photo from a safe distance is enough. Note when the problem started, whether it happens all the time or only under certain conditions, and anything unusual you've noticed such as noises, smells, ice, water, or a sudden jump on the utility bill. Also mention any recent filter changes or other work. The owner does the diagnosis himself, so the more context he has walking in, the faster he can zero in on the cause.