Michigan Have Waterfurnace now - need someone to check efficiency out and do yearly maintenance

location: Ray MI 48096 (SE Michigan)

Have a 6 year old Water furnace now (6 ton maybe?) - need to pay someone to check efficiency out and do yearly maintenance

really haven't done much since it was installed - was never happy with efficiency, seems to cost alot, even with a pretty well insulated spray foam house.

Looking for the local guru to hire to come check it out

Who the guy to speak to?

Thanks