Window AC Units, Space Heaters, and Other Tenant-Added Appliances: Setting a Fair Policy

A tenant texts to ask if they can put a window air conditioner in the bedroom, or plugs in a space heater the first cold week without asking at all. Neither is unreasonable on its own, but a rental full of tenant-added appliances that nobody approved can quietly turn into an electrical, safety, or utility-cost problem. A short, clear policy set before the requests start coming in saves you from having to make the call case by case under pressure.

Why Tenant-Added Appliances Are Worth a Policy

Older buildings in particular often weren't wired with multiple window units and space heaters in mind, and overloaded outlets or extension cords are a real fire risk, not a theoretical one. Beyond safety, a window AC unit changes the exterior appearance and sometimes the structural load on an old window frame, and a space heater left running in a unit with utilities included in rent will show up directly in your utility bill. None of that means the answer has to be no — it means you want a consistent process rather than ad hoc yeses and noes that are hard to defend later if a tenant asks why they were treated differently from someone else.

What a Reasonable Policy Covers

A workable policy usually spells out: which appliances need prior written approval (window units, space heaters, and portable AC units are the common ones), any installation requirements for window units (proper bracket or support, no removing screens permanently, no modifying the window itself), and a simple expectation that space heaters are used on their own circuit rather than daisy-chained with other devices. It's also worth noting who's responsible for removing a window unit at the end of the season or the lease, since that's a frequent source of move-out disputes.

Handling a Request When It Comes In

Most requests are easy to say yes to once you've looked at the unit size, where it's going, and whether utilities are included. When you do approve one, it's worth getting that in writing and attaching it to the tenant's file rather than relying on a text message you'll have to search for later — a quick note in the tenant's profile (unit approved, date, any conditions) means you and any future tenant handling that same unit are both working from the same record. Being able to snap a photo of the installation and attach it from your phone the same day you approve it, rather than waiting to document it when you're back at a desk, keeps the record accurate instead of reconstructed from memory weeks later.

Who Pays for the Extra Electricity

If tenants pay their own electric bill, an approved window unit or heater is simply part of their usage and their cost to manage. If utilities are included in rent, it's worth deciding ahead of time whether certain appliances are excluded from that arrangement or whether you'll revisit rent at renewal if usage patterns clearly changed. Either way, this is a good one to settle in writing rather than discover after a surprisingly high utility bill.

Tracking What It Costs You

If you're the one supplying a window unit, a surge protector, or an electrician's visit to check a circuit before approving a heavier appliance, logging that expense against the property as you go — rather than trying to reconstruct it from receipts at tax time — makes your year-end numbers far less painful to put together. Small, recurring costs like this are exactly the kind of thing that's easy to lose track of across a handful of properties if you're not recording them as they happen.

What About Permanent-Feeling Changes?

Some requests go further than a plug-in heater or a seasonal window unit — a tenant asking to add a 220-volt outlet for a larger appliance, or to run a dedicated line for a mini-split system, is a different conversation than approving a standard window unit. Anything that involves actual electrical work should go through a licensed electrician and be treated more like a structural alteration request than a simple appliance approval, with its own sign-off and, ideally, a quick note about who's covering the cost of the work.

Setting the Tone

None of this needs to feel restrictive to tenants if you frame it as being about safety and fairness rather than control. A short written policy, a quick approval process, and a record of what was approved and when will handle the vast majority of requests without friction. If you're looking for a simple way to keep approvals, tenant notes, and the costs that come with them organized across your properties, Easy Rent Tracker's plans are worth a look.