We swap it.
We prove it.
FilterProof is a per-visit filter replacement service for property managers and landlords. Our technicians visit every unit on schedule, swap the HVAC filter in person, and send you equipment photos plus a written visual checklist — so you never have to wonder whether it actually got done.
Roughly half of tenants never change their HVAC filter — not once, not ever. The lease says it's their job. The clogged filter in the furnace closet says otherwise.
Breakdowns you pay for
A clogged filter starves airflow, overheats the blower, and freezes coils. The result is emergency service calls, premature equipment failure, and five-figure system replacements years ahead of schedule.
Higher energy bills
The U.S. Department of Energy estimates a dirty filter makes a system use 5–15% more energy. Tenants feel it in their utility bills — and take it out on you in complaints and turnover.
No eyes inside the unit
Between turnovers, nobody sees inside your units for a year or more. Slow leaks, unauthorized pets, and lease violations go undetected until they've become expensive problems.
Three steps. Zero chasing tenants.
You give us the roster once. We handle scheduling, access coordination, the swap, and the documentation — every visit, every unit, all year.
We schedule
Send us your unit list and filter sizes. We build a route calendar — 3 or 4 visits per unit per year — and coordinate entry with your tenants or your lockbox/key system.
We show up & swap
A FilterProof technician comes to the unit in person, removes the old filter, installs the correct new one, and tidies the return vent area. While there, they complete the visual checklist — exterior, entryway, rooms on the way to the unit, cleanliness, odor, and pet observations. About 15 minutes per door.
You get the visit report
After every visit you receive a same-day report with three equipment photos — the HVAC unit, the pulled filter, and the new filter in place — plus the completed visual checklist. Photos stay on the equipment only, never the tenant's living space. Proof for your records, your owners, and your warranty files.
Equipment photos. A written checklist. No cameras in living spaces.
Tenants are right to be protective of their homes, so our standard documentation is built around the equipment — not the tenant's belongings. You still get dated proof of the visit and an early warning on problems, without a privacy fight.
Photos — equipment only
Three timestamped photos on every visit, included in every plan:
- The HVAC unit — the system itself, as found
- The pulled filter — the old filter's condition is the proof, and the warning sign
- The new filter in place — correct size, installed, dated
That's it for photos. Nothing of bedrooms, living rooms, or personal belongings — ever — under the standard service.
The visual checklist
Completed in writing on every visit, covering only what the technician can see on the way to the unit:
- Outside of the property — exterior condition as approached
- Entryway — condition at the door and just inside
- Rooms visible en route to the unit — only what's in plain view on the path to the HVAC
- Cleanliness — general condition of the areas seen
- Odor — smoke, pet, mildew, or other notable smells
- Pet observations — animals present, and any signs of unapproved pets
Each item is marked OK, Flag, or N/A, with a flagged-items section for details. It's a visual check by our technician — not a licensed home inspection.
Full Visual Check
When you need more than the standard checklist — a turnover, a concern about a specific unit, or an owner who wants eyes on everything — we offer a full visual check of the whole unit, documented by photo or video. Because it goes beyond the equipment, it only happens with written approval from both the tenant and the owner (or the management company acting for the owner). No approval, no full check — no exceptions.
Ask for a Full Visual Check quote- Dual approval required — written consent from the tenant and the owner before we schedule it
- Photo or video documentation — your choice: a full photo set or a narrated video walkthrough of every room
- Room-by-room written report — condition notes for the whole unit, not just the route to the HVAC
- Priced per quote — based on unit size and photo vs. video; tell us in the quote form and we'll price it
$35 to $45 per unit, per visit
Simple per-visit pricing for your whole portfolio — you pay only when we come out, billed per visit to the management company, never the tenant. The bigger the portfolio, the lower the per-visit rate. Every price covers a basic filter in the correct size; premium filters — higher-MERV, specialty, or washable — are available for an extra charge.
1–5 Units
For single doors and small portfolios.
Billed per visit to the management company.
- In-person filter swaps, 3–4 times a year
- Basic filter in the correct size, included & installed
- Equipment photos every visit — HVAC unit, pulled filter, new filter in place
- Written visual checklist — exterior, entryway, rooms en route, cleanliness, odor, pets
- Same-day visit report after each visit
- Scheduling & tenant coordination handled by us
6–12 Units
For small portfolios and duplex clusters.
Billed per visit to the management company
- In-person filter swaps, 3–4 times a year
- Basic filter in the correct size, included & installed
- Equipment photos every visit — HVAC unit, pulled filter, new filter in place
- Written visual checklist — exterior, entryway, rooms en route, cleanliness, odor, pets
- Same-day visit report after each visit
- Early flagging of leaks, damage & visible lease issues
13+ Units
Our best per-visit rate for larger portfolios.
Billed per visit to the management company
- In-person filter swaps, 3–4 times a year
- Basic filter in the correct size, included & installed
- Equipment photos every visit — HVAC unit, pulled filter, new filter in place
- Written visual checklist — exterior, entryway, rooms en route, cleanliness, odor, pets
- Same-day visit report after each visit
- Dated visit history for every unit in your portfolio
Charge your tenant $15/mo. Keep the difference.
We bill you per visit — never the tenant. Most owners pass the service on as a flat $15/mo per-unit fee in the rent or a resident-benefit line. At 4 visits a year, FilterProof costs $11.67–$15.00/mo per unit depending on portfolio size, so the $15 fee covers the service in full — and at volume tiers, you keep a slice of every dollar.
The math: $15/mo × 12 = $180/yr collected per unit, minus 4 visits a year at your per-visit rate. Profit is what's left — $3.33 of every $15 at the 13+ rate is a 22% margin.
Less than you're probably paying for mailed filters today
Many owners already cover a direct filter-delivery service by passing about $18/mo per unit on to the tenant — for a filter that's just shipped to the door. FilterProof comes in under that, at the $15/mo pass-through above, and the filter actually gets installed.
About $216 per unit, per year
Filter shipped to the tenant's door. The tenant is supposed to install it — roughly half never do — and there's no proof it happened and no eyes inside the unit.
$180 per unit, per year at the tenant pass-through
A technician installs the filter in person, every visit — plus equipment photos and the written visual checklist. Lower cost to pass on, and the job is guaranteed done.
$3/mo less per unit = $36 a year per unit. On a 100-unit portfolio that's $300/mo — $3,600 a year less than the ~$18/mo delivery average, while switching from “mailed and hoped for” to installed and documented.
Estimate your portfolio
Your per-visit rate is set by portfolio size: 1–5 units at $45 per visit, 6–12 units at $40 per visit, 13+ units at $35 per visit. Every rate covers a basic filter — premium filters (higher-MERV, specialty, washable) cost extra — and includes the equipment photos and written visual checklist on every visit. Yearly figures below assume 4 visits per unit per year. The Full Visual Check add-on is priced separately by quote. Final quote depends on filter sizes and route density.
Mailed filters get mailed. Ours get installed.
Filter-delivery services ship a box to your tenant and call it handled — at about $18/mo per unit on average, more than FilterProof's $15/mo tenant pass-through. And a filter in a shipping box doesn't protect your HVAC system — about half your tenants will never install it.
Filter delivery services
They mail it — and hope.
- Tenant is supposed to install itRoughly half never do. The filter sits in a closet until turnover.
- No proof it happenedA delivery scan proves a box arrived. It says nothing about your furnace.
- Nobody enters the unitLeaks, damage, and lease violations stay invisible for a year or more.
- Wrong sizes, lost boxesPorch theft, bad addresses, and odd-size returns become your problem.
FilterProof
We show up — and guarantee it's done.
- A technician installs it, in personEvery unit, every cycle. Tenant cooperation is not part of the equation.
- Timestamped photo proofThe HVAC unit, the pulled filter, the new filter in place — equipment photos on every single visit.
- Eyes on the property — without the privacy fightEvery visit includes a written checklist: exterior, entryway, rooms en route, cleanliness, odor, pets. Problems surface in weeks, not at move-out.
- We carry the right filterSizes confirmed per unit up front and stocked on the truck. No boxes, no porch, no guesswork.
Built for per-unit HVAC
FilterProof fits any property where each home has its own furnace or air handler — which means every door is a filter, and every filter is on us.
Garden-style apartments
Low-rise communities with a furnace closet in every unit. One route stop covers dozens of doors — our most efficient, best-priced coverage.
Duplexes & small multifamily
The 2–20 unit buildings too small for a full-time maintenance tech — exactly where skipped filters do the most damage per dollar.
Townhomes
Each townhome has its own system and its own filter. We service whole HOA rental clusters on one scheduled route.
Single-family rental portfolios
Scattered-site SFR is where filters go to die. We route your whole portfolio so every house gets the same documented care.
Managing a mid- or high-rise with a central plant? Those run a handful of large commercial filters instead of one per unit — ask us and we'll tell you honestly whether we're the right fit.
Put every filter in your portfolio on autopilot
Tell us about your properties and we'll build your quote request — routes, visit calendar, and per-visit pricing for your whole portfolio.
- Response within one business day
- Start with a single building or your full portfolio
- No long-term contract — pause or cancel anytime
- Every plan covers a basic filter — premium filters (higher-MERV, specialty, washable) cost extra
- Full Visual Check add-on available — tenant + owner approved, photo or video, priced by quote