Darkroom cooling/air conditioning options

[brass.duet]

Are your a/c filters clean? Without adequate air circulation around the coils, the heat exchange process cannot happen, Captain. If not that, it's time for a professional assessment.

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[brucetaylor]

And some units shut down a/c function when clogged filters are detected. If it is a window or portable unit it probably means it is time to buy a new one.

[DG 3313]

I did a window mounted AC unit (I built a wall opening for it) in a garage DR. I had to find light tight vents to balance the air. Wall (window) mounted units blow air in to the room but, suck from the outside. I had to provide a vent to balance the pressure. It was soooo long ago....I don't remember where I got them but, they worked and the AC unit was light tight..

(during construction) the city building inspector requested ventilation and I found it.

[AndrewMC]

If you're still facing issues, don't hesitate to get a pro assessment.

[Tin Can]

I converted a small bedroom to DR, I have Central HVAC

I WAS worried about many things

I added a 6 gallon portable humidifier for winter

Under my SS DR sink

I covered the one big window in layers, 2 sheets of plywood and white blackout film to hide DR outside view

It is now my tornado hide

[AsynMike]

Hey, Captain! Good point! Checking and cleaning your A/C filters regularly is crucial for proper air circulation around the coils. It keeps your system running smoothly. If you're still facing issues, it's wise to call in the pros for a thorough assessment. They'll have it ship-shape in no time! By the way, if you need a/c repair in Tampa, there are experts who can help you out ��

[Tin Can]

actually i am letting most foliage cover my windows

and shade my ac

when leaves fall

I trim

[Pieter]

My darkroom occupies the back third of my garage. It is full insulated, with a concrete slab floor. No windows. It stays reasonably cool in the summer, but it is chilly in the winter (by Southern California standards). No need for AC, a small oil-filled heater for the winter.

[Maris Rusis]

I get lots of 90+ Fahrenheit days in summer so I equipped my small darkroom with a 2.5kw split system air-conditioner. The "split" involves a minor hole in the wall that is easy to make light-tight. Hinged pieces of black card cover the function lights so the system is film safe.
One important consideration is darkroom fume control. The usual recommended volume of outside air (at 90+ degrees!) pumped into the darkroom to replace air sucked out by a fume extractor will defeat the air-conditioner no matter how hard it runs. The gap between 90F and 68F is just to much. My solution was abandon the fume extractor system entirely and move to odorless chemistry. Costs a little bit more but works well even for the other darkroom user who is an asthmatic.