How often should my HVAC be serviced?

Why does my Amana dishwasher have standing water?

I want to know how much it costs for you guys to come out and check my Whirlpool refrigerator. It makes a lot of rattling noise, and sometimes when I buy some vegetables, it freezes. It doesn't seem to be keeping the vegetables fresh enough.

How to fix a Kenmore side-by-side ice maker from 2001?

How long will a water heater last?

I had a service man here yesterday to give me an estimate on replacing the gasket on my freezer and refrigerator. The insurance company was trying to get reinvestment from the needs of breakdown. How much are gasket and labor? Could you email me something on that?

Is it ok to use a tankless water heater in colder climates, specifically the Noritz NC199 OD?

How much does a 4x8 sheet of half inch drywall weigh?

Do you work on commercial appliances? I have an oven, and it's causing the electricity to go out. It's not the breakers either that are causing some sort of short. So I was wondering if you could take a look at it.

Is my wiring up-to-date?

You fix refrigerators, right? I have this GE refrigerator that's about 10 years old. It's a side-by-side refrigerator. It was working fine. Then we had to do some work with the power coming into the house, and we needed to shut the power off several times and turn it back on again. After it went through that, it won't work anymore. I thought it would be something simple like a circuit breaker or a fuse, but evidently, it wasn't. There isn't any power in the control panel; there's the only power in the light bulbs inside the fridge. Somebody told me it could be the control panel or circuit board at the back. Are you familiar with that? What do you charge for a service call? Do you buy authorized parts for repairs? How do you get them?