The Basement Beast

There’s really no other way to put it: the heating system at Grandview is insane.

There are three oil furnaces in the house. One absolutely massive Thermo Pride heats the downstairs and the upstairs bathrooms. A large but somewhat less monstrous Lennox heats the upstairs bedrooms. Another Lennox heats the sunroom. And then, as if that were not enough, there is an oil-fired New Yorker boiler heating water into SuperStor tanks.

I think that is what they are called, anyway. SuperStor. Superstor. Super Store. I don’t know… I’m still learning the language of this place.

All of these systems date back to the early 1970s. They were part of the original mechanical design of the house, and from one perspective, I admire them. Grandview was not built casually. The systems are big, redundant, labeled, and deliberate. The design intent is impressive and respectable, even if the logic belongs to another era.

But they are old. And inefficient. And in at least one case, no longer safe.

When we bought Grandview, we knew the Lennox furnace serving the upstairs bedrooms had a cracked heat exchanger. That meant it was on borrowed time from day one. A cracked heat exchanger is not a “we should probably get to that eventually” kind of problem. It creates the possibility of combustion gases mixing with the air being circulated through the house, and more specifically, introducing carbon monoxide into the bedrooms through the ductwork. When the furnace in question serves the bedrooms where your kids sleep, the decision becomes pretty simple.

It had to go.

The old unit was a monster. Not necessarily in output by Grandview standards, because everything here seems to be oversized, but in weight, shape, and general unwillingness to leave the basement. It had been sitting there since around 1973, doing its job for more than fifty years. While I had the utmost respect for it’s longevity and performance across so many decades, I also resented it deeply while trying to move it.

Henry and I pulled the old furnace out ourselves.

That sounds simpler than it was. Oil furnaces are not friendly objects. They are heavy, awkward, sharp-edged, and somehow always positioned in the absolutely least convenient way. There was a lot of dragging, levering, grunting, swearing, and stopping to reassess whether we were actually moving it or just becoming emotionally attached to it.

Eventually, though, we got it out.

For the replacement, we knew we did not necessarily need to match the old furnace one-for-one. Technology has come a long way since the early 1970s, and the old equipment was from an era when fuel was cheaper, efficiency standards were different, and oversizing was common. The upstairs bedroom zone is not that large in the context of the whole house, and the new furnace could be smaller, cleaner, and significantly more efficient.

We ended up choosing a Granby Conforto.

It was less expensive than going with another Thermo Pride, but still felt like a quality piece of equipment. Granby has a good reputation, it’s common up here so plenty of contractors service them, the unit is Canadian-built, and it seemed like a practical fit for the house.

We hired a local contractor to help with the installation. I am comfortable doing plenty of work around here, but there are places where it makes sense to bring in someone who does this every day. Setting up an oil furnace correctly is one of those places. The burner setup, combustion testing, and final tuning in particular was the scope I didn’t feel comfortable attacking on my own. This is not just a box that makes hot air. It is a combustion appliance inside the house.

The difference has been dramatic.

The old furnace was limping along at something like 50 percent efficiency. The new Granby is running closer to 90 percent. That is not a subtle improvement. It means more of the fuel we are buying is actually becoming heat in the house instead of disappearing up the chimney. It also means shorter run times, steadier heat, and a much more comfortable upstairs.

Before the replacement, the upstairs was… not comfortable. You could smell the inefficient combustion coming through the ductwork, and the unit couldn’t hold a constant temperature. The new unit, in contrast, heats quickly, cycles appropriately (and quietly), and easily holds temps through the coldest of nights. The bedrooms are more comfortable, the system is quieter and cleaner, and I am not lying awake stressing about the cracked heat exchanger in the basement releasing toxic gasses into my home.

There are a lot of projects at Grandview that are about improvement. Some are about aesthetics. Some are about efficiency. Some are about undoing decades of deferred maintenance or simply making the house easier to live in. This one was about safety.

The fuel savings are great. The comfort is great. The satisfaction of removing a fifty-year-old furnace and replacing it with a properly sized modern unit is very real. But the most important thing is knowing that the air being pushed into the kids’ bedrooms is coming from a safe, relaible piece of equipment.

Grandview still has plenty of old mechanical systems left. The big Thermo Pride is still down there. The sunroom furnace is still down there. The New Yorker boiler is still doing its thing with the hot water tanks. This was not the grand modernization of the entire house.

It was one step. But it was a big one.

One old furnace out. One safer, more efficient furnace in. A little less oil burned. A little more comfort upstairs. A little more confidence in the house.

Progress.