Buying a House With Radiator Heat: What the Inspection Covers

Radiator heat alone isn’t a reason to pass on a house. When you’re buying a house with radiator heat, the written inspection report answers whether the heating system ran and what kind it is. The rest stays yours to ask: whether every room heats, and how the house is cooled. Under InterNACHI’s Standards of Practice, the inspector inspects the heating system using normal operating controls and describes the heating method. The Standards say the inspector isn’t required to determine the uniformity, temperature, flow, balance or distribution of the heat.

That gap matters. A buyer who reads “the heating system operated” as every room heating, or who assumes the house is cooled the same way it’s heated, can close on cold rooms nobody checked and a cooling plan nobody priced. Under the Standards, cooling gets its own section, and window or through-wall units sit outside it. This is general information for buyers, not heating, legal or financial advice.

What Does a Home Inspection Check on Radiator Heat?

The inspection covers the heating system itself. InterNACHI’s Standards of Practice say the inspector inspects the heating system using normal operating controls. The Standards say the inspector describes the location of the thermostat for the heating system, the energy source and the heating method. That’s the description you’ll read in the report.

The Standards also say the inspector reports as in need of correction any heating system that did not operate, and if the heating system was deemed inaccessible. So a system that wouldn’t run shows up as a finding. So does a system nobody could reach.

Our licensed inspectors perform a visual examination of the structure and all major systems, and HVAC is on the list of what we evaluate. Every finding is documented with photographs, so nothing is left to guesswork.

Will the Inspector Check Every Radiator?

Not room by room. The Standards list determining “the uniformity, temperature, flow, balance, distribution, size, capacity, BTU, or supply adequacy of the heating system” among the things the inspector is not required to do. So a line saying the heating system operated describes the system, not each room. That part’s yours.

A visual inspection can report only what’s visible and accessible on the day. You can walk the house with the heat on and note any room that stays cold. Then ask the seller about it.

We ask that all utilities (water, electric and gas) be turned on so every system can be tested.

How Is a House With Radiators Cooled?

Cooling is its own question. As a general rule, radiators heat a house and don’t cool it. The Standards give cooling a separate section: the inspector inspects the cooling system using normal operating controls and describes the cooling method. So the heating answer isn’t the cooling answer.

Among the things the Standards don’t require are inspecting portable window units or through-wall units, and operating cooling equipment when it’s below 65°F outside. So on a cold inspection day, the cooling may not be run. And a window unit sits outside that section.

How you’d cool the house, and what that would take, is a question for a heating and cooling contractor and for your own planning.

What About Old Insulation on the Heating Pipes?

It’s a question to ask about, not a verdict on the house. Our post on buying a house with asbestos, which covers homes from mid-century single-family homes to older city rowhomes, says, “Steam and hot-water heating systems, in particular, were often wrapped in asbestos-based insulation.” The same post says, “None of that makes these homes unsafe to buy.”

If the report or your own walk-through shows wrapped heating pipes, take it further before closing, with the seller and your real estate agent. Our asbestos post covers that ground.

Questions to Ask Before Buying a House With Radiator Heat

It’s worth putting your questions in writing before you go back to the seller. A written inspection report gives you something specific to bring to the seller or your real estate agent. Keep the questions plain.

• Did the heating system run with normal controls during the inspection?
• Did any room stay cold with the heat on?
• What heating method and energy source does the report describe?
• What service records does the seller have for the boiler?
• What’s the boiler’s AFUE rating?
• How is the house cooled, and did the cooling run on inspection day?

ENERGY STAR says AFUE is the measure of heating equipment efficiency, and that ENERGY STAR certified boilers have AFUE ratings of 87% or greater for oil boilers and 90% or greater for gas boilers. That rating is a number to ask the seller for.

Our post on how to read the age of older heating equipment says that in Bucks and Montgomery County, we photograph the equipment’s data plate so you can read the manufacture date yourself.

Questions about the agreement of sale belong with your real estate agent.

What Should Sellers With Radiator Heat Do Before the Inspection?

Keep the heat on. We ask for all utilities to be on so every system can be tested. The Standards describe a home inspection as a non-invasive, visual examination of the accessible areas of a residential property, so it’s worth keeping the boiler and the radiators reachable. Then gather the boiler’s service records and model information.

If a room stays cold with the heat on, that’s a question for a heating and cooling contractor.

Frequently Asked Questions About Radiator Heat

Does a home inspection include the boiler?

The Standards say the inspector inspects the heating system using normal operating controls. They also say the inspector describes the energy source and the heating method, and reports as in need of correction a heating system that did not operate. So the report tells you what the system is and whether it ran.

Will the report say whether every room heats?

The Standards list determining the uniformity, temperature, flow, balance or distribution of the heat among the things the inspector is not required to do. So that answer is yours to gather. Walk the rooms with the heat on and ask the seller about any that stay cold.

Can the air conditioning be tested on a cold day?

The Standards say the inspector is not required to operate equipment when it’s below 65°F outside. So on a cold inspection day, the cooling may not be run. Ask the seller how the house is cooled.

Are window air conditioners part of the inspection?

The Standards list inspecting portable window units and through-wall units among the things the inspector is not required to do. So a window unit isn’t part of the cooling section. Ask the seller about any window units in the house.

Can the seller’s answers replace an inspection?

No. A seller’s answers tell you what the seller knows. A full written home inspection documents what’s visible and accessible on the day, with photographs, and our reports are delivered within 24 hours.

Know What the Report Answers

Inspection Professionals’ written report documents every finding with photographs and is delivered within 24 hours, so you can see the evidence for each finding rather than a summary.

Knowing what the report says about the heating system, and what it leaves to you, gives you specific questions to ask about the rooms and the cooling before closing.

A full home inspection is the written report to have in hand while you ask.

If you’re buying a house with radiator heat in Bucks County, Montgomery County, Philadelphia or Delaware County, contact Inspection Professionals about a full written home inspection.