The Building Wouldn't Cool Down

The texts started early that morning. A few tenants said the air coming from their vents felt weak. Others said it was moving, but it was not cold enough to make any difference. At first I thought it might be the usual start-of-summer trouble. By the time I reached the building, it was already over 30 degrees outside, my phone kept buzzing, and it was clear the problem was bigger than I had expected.

My maintenance guy was checking units while I went up to the roof. The condenser units were running, just not the way they should have been. I changed a clogged filter. That helped a little, but not enough. I went back downstairs knowing I had fixed one problem without fixing the building.

A filter was not going to solve the day

More messages came in around noon. Everyone wanted to know when the cooling would be back to normal, and I did not have a good answer. One resident said the unit felt like an oven and messaged me again while I was on the roof. I felt bad, but I still could not give a repair time. People were hot in their own homes. They did not want a lesson about mechanical systems. They wanted an answer.

I explained that we were checking it and that this was not a switch I could flip. I am not sure anyone felt better after hearing that, but making up a repair time would have been worse.

Our custodian brought water to some of the tenants in the hottest units. My maintenance guy checked vents and made sure nothing obvious was blocking the airflow. I checked thermostats and went back over what I had already looked at. The equipment seemed to be running, yet the building was still not cooling properly.

The portable-air-conditioner question

One tenant stopped me in the hallway and asked whether we could bring in portable air conditioners. I understood why he asked. When your unit feels like an oven, a portable machine sounds like the quickest answer.

The problem was scale. We were not dealing with one bedroom. We had complaints from enough units that a handful of portable machines would barely make a dent. They might help in a specific urgent situation, but they were not a repair for the building system.

I gave our property manager an update around two. At that point I could tell her what we had checked, what had improved, and what had not. I still could not tell her exactly what was wrong.

That bothered me. I like closing the loop. I like finding the bad part, fixing it, and telling people the problem is handled. This was not that kind of day.

Knowing when the answer is not in front of you

I went back to the roof and tried bleeding air from the lines because my maintenance guy thought it might be part of the problem. I was not convinced, but it was one more reasonable check. The sun was beating down, the units were still struggling, and the messages kept coming.

By late afternoon I was thinking we might need a cooling specialist. I knew what we had checked, but I still did not know why the building was not cooling properly.

The hardest part of a heat call is that comfort and safety start to blend together. A cool hallway does not help much when a tenant is stuck in a hot bedroom. A small improvement at the equipment does not feel like progress to the person sitting beside a fan, waiting for the air to change.

That is why I try to separate what I know from what I only suspect. I can say the filter was changed. I can say the rooftop units were checked. I can say the airflow was still weak in some places. What I cannot do is promise the whole building will cool down by a certain hour when the system has not given me that answer yet.

It is the same reason I ask residents to give useful details when they report a problem. “The AC is broken” gets my attention, but the room, time, airflow, and temperature help me act. I wrote about that in No, I Can't Read Your Mind: Why Reporting Building Issues Matters.

As the day wound down, my phone was still full of messages and the cooling system was still not right. My maintenance guy and I would have to keep working through it and keep residents updated.