Very Satisfied with the service; real nice guy; quick response, seemed very knowledgeable. My only issue is he charged me $120 to connect a wire that had vibrated loose. It took about 20 minutes total including troubleshooting. To be fair - I couldn't have fixed it myself - I had no idea what to look for & I payed for his experience. In any case $120 is better than $1K for a new boiler. I'd recommend him.