We wouldn't use any else besides Southwest Air Conditioning and Heating. We've counted on them for many years to take care of our furnace and air conditioner. They come out twice a year to check things and are easy to reach if a problem comes up. They've replaced both our furnace and air conditioning systems at some point. Their work is top-notch and we can trust them to be efficient. The guys are polite and don't leave a mess. We will continue to count on Southwest Air Conditioning and Heating to take care of our heating and cooling needs.