Wahl Family Heating, Cooling and Plumbing, Pittsburgh PA

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Wahl Family Heating, Cooling and Plumbing, Pittsburgh PA
Pittsburgh Homes · Permits & Code

The Pittsburgh permit and inspection truth nobody tells you

Allegheny County has one of the best plumbing codes in the country, and a city mechanical permit can take months. But here is the part that should worry any homebuyer: what the inspector actually checks, and what they do not.

The short answer

Allegheny County has its own plumbing code that actually supersedes the International Plumbing Code, and it protects public health well. But a city of Pittsburgh mechanical permit is a slow, expensive process; I have waited as long as nine months for one. And here is the kicker: when the inspector finally shows up, the main thing they verify is that the UL-listed tape is on every duct joint. They do not check sizing, refrigerant charge, gas leaks, the heat exchanger or static pressure.

So if you are buying a home, do not assume a permit and an inspection mean the system is right. Pay a licensed HVAC contractor to actually evaluate it.

Allegheny County has one of the best plumbing codes anywhere

I will say something with real pride: in Pittsburgh, and more specifically Allegheny County, we have one of the best plumbing departments in the country, maybe the world. Our plumbing code actually supersedes the International Plumbing Code. It started back in the 1960s, and I am genuinely proud to be a master plumber in this county and part of a system that truly works to protect public health.

A lot of homeowners are surprised to learn you cannot just do plumbing work on your own home without filing a permit. I actually think it is pretty fair, or libertarian, of the health department to let homeowners file their own plans if they know how to do the work, but typically a master plumber has to be the one filing the plan and doing the job. When we do a plumbing install, the health department comes out and inspects it.

The city mechanical permit is a different animal

Most municipalities have their own permits, but the city of Pittsburgh has a very extensive mechanical permit process for HVAC, electrical and gas work. I will be straight with you: it is expensive for both the homeowner and the contractor, in time and in money, and it is a nightmare to work through. We are a licensed mechanical contractor and we deal with it regularly, so I am not guessing here.

You would think a furnace permit takes 3 to 5 days. It does not. I have had to wait up to nine months to get the permit on a job. Nine months. For a permit before the work is even inspected.

Here is the juicy nugget for DIYers and out-of-towners

This is the part that genuinely bothers me, and every homebuyer should hear it. You get the mechanical permit, you install the whole system, the ductwork, the electrical, the brazing on the condenser and furnace, the air conditioner, the thermostat, all of it. You would naturally expect the inspector to make sure:

  • The equipment is the right size for the home
  • Each room actually heats and cools
  • The system comes on properly from the thermostat
  • The refrigerant charge is correct
  • There are no gas leaks
  • The heat exchanger is in good shape
  • The static pressure is where it should be

They do not check any of that. The only thing I have ever seen the inspector verify is that we have the proper UL-listed tape on every joint of the ductwork. They look everywhere for that tape, and they are thorough about it. But the things that actually determine whether your system is safe, efficient and sized right? Not checked, not even a little. It seems absolutely crazy to me, but that is the reality.

What this means if you are buying a Pittsburgh home

This is exactly why I tell people the industry is closer to the Wild West than they would expect. A permit and an inspection do not guarantee the system in the house is correct. Home inspectors and building inspectors are not catching the things you would actually care about.

So here is my honest advice, especially for out-of-towners or anyone moving to Pittsburgh: before you buy a home, pay the fee to have a licensed HVAC contractor evaluate the system. It is cheap insurance against inheriting an oversized, mischarged or unsafe setup that passed an inspection on a tape check. We are happy to do an in-home consultation and walk you through what permits and licensing your own project would actually require. You can always get in touch, and if you want to know who you are dealing with first, here is our story.

The quick version

  • Allegheny County has its own plumbing code that supersedes the International Plumbing Code, and it protects public health well.
  • A city of Pittsburgh mechanical permit is slow and expensive; David has waited up to nine months for one.
  • Inspectors mainly verify UL-listed tape on duct joints, not sizing, refrigerant charge, gas leaks, the heat exchanger or static pressure.
  • A passed permit and inspection do not mean the system is correct, safe or properly sized.
  • Before buying a Pittsburgh home, pay a licensed HVAC contractor to evaluate the system, because standard inspections miss what matters.

You would think the inspector checks the size, the charge, the gas, the heat exchanger, the static pressure. The only thing I have ever seen them check is that the UL-listed tape is on every duct joint.

So if you are buying a home here, do not trust the permit. Pay a licensed contractor to actually look at the system. It is the cheapest insurance you will ever buy.

David WahlCEO & Master Plumber, Wahl Family

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Frequently asked questions

Do I need a permit to do plumbing work on my own home in Allegheny County?

Yes. You cannot do plumbing work on your own home without filing a permit. The health department does allow a homeowner to file their own plans if they genuinely know the work, but typically a master plumber must file the plan and perform the work. Allegheny County’s plumbing code is strict because it is built to protect public health.

How long does a Pittsburgh mechanical permit take?

Far longer than people expect. It is not a few days. As a licensed mechanical contractor I have waited up to nine months to obtain a city mechanical permit on a job. It is an expensive and time-consuming process for both the homeowner and the contractor.

What does a Pittsburgh inspector actually check on an HVAC install?

In our experience, the main thing they verify is that the proper UL-listed tape is on every duct joint, and they are very thorough about that. They do not check equipment sizing, refrigerant charge, gas leaks, the heat exchanger or static pressure, the things that actually determine whether your system is safe and working right.

Does the Allegheny County code really supersede the International Plumbing Code?

Yes. Pittsburgh and Allegheny County have their own plumbing code, dating back to the 1960s, that is stricter than and supersedes the International Plumbing Code. It is one of the strongest plumbing departments in the country.

Should I get an HVAC system inspected before buying a Pittsburgh home?

Absolutely, by a licensed HVAC contractor, not just a general home inspector. Permits and standard inspections do not confirm that the equipment is sized correctly, charged properly, or free of gas and venting issues. Paying for a real system evaluation before you buy can save you from inheriting an expensive problem.

For a Happy Home, Get Wahl

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