Golden Rule Plumbing Heating & Cooling came out recently and did a check-up on our HVAC system. We have been using them for several years because of their excellent service. They are always friendly, and I must mention how helpful they are. They are ready to answer any question I have, and they keep us informed of everything they are doing. They take the time to explain everything. I recommend them to my friends and my family. I plan to keep using their excellent service.