In December of 2004 Greenwood was sold again to Michael Porter, this time going back to its Puget Sound roots… owned by a local Seattle resident. Michael Porter, a West Seattle resident and a life-long Seattle native. He is committed to complete customer satisfaction and has a mission to be ‘The Most Trusted HVAC Company in the Puget Sound area’. To become the best heating contractor in Seattle and the Eastside he knows he must be able to provide the Highest Quality and most energy efficient Air Conditioning and Heating products on the market. But there is so much more to being the best. Greenwood Heating is also your local expert when it comes to endless hot water systems, they are also your Indoor Air Quality experts with a full product line of air cleaning products.


Partly to avoid that possibility, the furnaces in most homes are larger than necessary. Initial cost is only one of the drawbacks of that strategy. A furnace that's too large will cycle on and off more frequently. That puts more wear on its components, wastes energy, and might cause the temperature to vary uncomfortably. Also, a larger replacement furnace might require larger ducts. Without the right size ducts, airflow can be noisy.

Customer has a 3 year old American Standard gas furnace, she said that her furnace and thermostat were fried and not working. She had an electrician come by and inspect it, but he wasn't able to do anything. Upon investigation, I found that the thermostat has failed due to a power surge that hit the home. I also found that the fuse on the control board was blown and the contactor at the condenser was fried along with wiring. I replaced thermostat, contactor, and fuse/wiring and tested all modes of operation. All components are within manufacturers specifications and system fully operational. Recommend annual maintenance and power surge protector for either home or equipment.
There will always be an occasion for you to rely on a heating or air conditioning system. The major appliances make comfortable life possible, providing warmth on nippy days and cool air during humid summers. Whether or not you use them daily, however, your heating and air conditioning systems need to be maintained every now and then to ensure that they function properly.

As a Bryant Factory Authorized Dealer, Welzig Heating & Air consistently performs to strenuous standards of technical competence, business ethics, and customer approval.  Our team is NATE-certified, factory trained and regularly updated in progressive technology.  Equipped with leading edge equipment, tools, and a full inventory of genuine manufacturer’s replacement parts, we properly size and install new systems, accurately diagnose existing systems, and resolve the majority of issues right then and there.
High-efficiency condensing furnaces (90% AFUE and above) are a bit more complex than conventional furnaces. The main differences between a conventional and condensing furnace is the heat exchanger technology used to extract heat from the combustion process and the method used to exhaust the combustion gases. In these ways, the furnaces are very different. The condensing furnace does not have a significantly more efficient combustion process than does a conventional furnace; both use gas burners with electronic ignition. The difference lies in that the condensing furnace has a more efficient heat extraction process after combustion.
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