I called at 8am my thermostat was completely without power. The woman on the phone was very nice and troubleshot with me for a little bit. She made clear the cost of the service, and told me someone would be there between 11 and 1pm same day. At around 12 Andrew arrived. He was extremely polite, nice and efficient. He went straight to work right away and worked out the problem. He was nice enough to show me the root of the problem, his solutions and what was causing the issue. He inspected my furnace, and provided me with a lot of advice going forward. He was extremely knowledgeable, professional and very efficient. He didn't try and sell anything, didn't take his time or over complicate things, he identified the problem and solved it.
He also told me there is a 30 day guarantee on the work done. I couldn't be more pleased. I started today with a freezing house and broken furnace, and less than 4 hours later I have a working furnace, confidence in my safety, and it only cost me $125.
I would completely recommend the service from Appleby Systems.