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Frequently Asked Questions

Please reach us at robs@coldwave.com if you cannot find an answer to your question.

Many manufacturers recommend inspecting even new equipment twice a year. A checkup can catch problems early, extend the life of the equipment, and avoid a breakdown on the hottest or coldest day of the year. We check refrigerant levels, motor condition, thermostat calibration, and coil cleanliness, along with anything that could be a safety concern.


Equipment running low on refrigerant runs longer than it has to, raising utility costs and shortening its lifespan. Dirty coils or a clogged filter reduce running efficiency the same way. On evaporative coolers, we also check for a stuck-open damper, which lets conditioned air escape before it reaches the house..


A damaged breaker or a loose electrical connection can damage major components or start a fire. On a gas furnace, dirty or clogged burners can cause backfiring or excess carbon monoxide. Your equipment has safety controls built in, but they only help if they're working -- we test all of them during an inspection.


Vibration and age can cause slow leaks in the refrigerant lines. During an inspection we measure refrigerant pressure and visually check the lines. If a system keeps running low, we can add a dye that stays in the system permanently, letting us find even small leaks later with a detection light or electronic leak detector.


The system runs longer to compensate, which raises utility bills and makes the compressor work harder -- which can eventually damage it.


If burners are dirty, poorly adjusted, or the flue isn't venting properly, the flame can ignite out of the front of the furnace instead of up into the heat exchanger -- a fire risk inside the unit. We check for this during every furnace inspection.


A colorless, odorless gas produced by incomplete combustion. At low levels it can cause headaches, dizziness, nausea, and fatigue; at high levels it can be fatal. We test for it every time we service a furnace.


Dirty burners produce more carbon monoxide. Normally these gases vent safely through the flue pipe, but a cracked heat exchanger -- which can happen as equipment ages -- can let them leak into the home instead.


With a sensing meter that measures exactly how much carbon monoxide a furnace is producing and whether it could be reaching the living space.


Over time, a shutoff valve, flexible line, or internal gas line can develop a leak. A natural gas leak is extremely dangerous -- it takes only a spark to cause a fire or explosion. We check for leaks during every furnace service call.


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