HVAC equipment intelligence for homeowners

Know your HVAC. Know what's wrong. Know what to do next.

FurnaceIQ uses your equipment information, photos and symptoms to help you understand your furnace, air conditioner or heat pump — and gives you a clear next step.

Free for homeowners. Built by a 20-year journeyman HVAC/gas technician.

The FurnaceIQ workflow

  1. Take a photo

    Rating plate or the unit itself.

  2. Equipment identified

    Model, serial and specs when available.

  3. Equipment profile

    Your HVAC info, kept in one place.

  4. Guided diagnosis

    Safe questions based on your equipment.

  5. Technician report

    A clear summary to hand to a pro.

Most-requested homeowner question

Is your furnace the right size for your home?

Almost no homeowner knows. Oversized furnaces short-cycle and leave rooms uneven; undersized furnaces run flat out on the coldest nights. FurnaceIQ answers a few plain-English questions about your home, combines them with your scanned furnace nameplate data, and shows you how the two compare — side by side.

  • Estimated home heat loss in BTU/hr, in plain language
  • Your actual furnace input and output from the rating plate you scanned
  • A simple result: potentially oversized, reasonably matched, or potentially undersized
  • Compare a contractor's proposed replacement before you sign anything

Estimate only — a Manual-J-inspired screening tool, not a certified Manual J load calculation. A licensed contractor should perform a full heat-loss calculation before equipment is selected.

Furnace size check

Potentially oversized
Your home needs (estimated)~58,000 BTU/hr
Your furnace delivers~88,000 BTU/hr

From your scanned nameplate — 110,000 BTU/hr input at 80% AFUE

What this means: your furnace looks larger than this estimate suggests your home needs. That is common and not an emergency — it usually shows up as short run cycles and uneven rooms, and is worth reviewing at replacement time.

Start with your equipment

Take a photo of your equipment rating plate and FurnaceIQ can help identify the equipment and organize the information you need — model and serial number, capacity, efficiency and electrical details when available.

  • Reads the rating plate and extracts the information it can identify
  • Decodes manufacturer model and serial nomenclature where possible
  • Anything it can't read stays open for you to fill in

Equipment profile

Example
Manufacturer
Lennox
Model number
SL280UH090V60C
Serial number
5921K12345
Equipment type
Gas furnace, upflow
Input rating
88,000 BTU/hr
Efficiency
80% AFUE
Voltage / phase
115 V / 1 ph
Fuel type
Natural gas
Blower motor
Variable speed (ECM)
Install date
Add yours

Illustration only. Results vary with plate condition and photo quality — FurnaceIQ extracts the information it can identify.

My Home

Example

Furnace

Lennox

Model SL280UH090V60C

80% AFUE

88,000 BTU/hr

Air conditioner

Carrier

Model 24ACC636A003

3 ton

R-410A

Thermostat

Nest

Learning, 3rd gen

Filtration

16x25x1

MERV 11

Next change in 6 weeks

Your equipment. All in one place.

FurnaceIQ organizes your furnace, air conditioner or heat pump, thermostat and filter information so future questions can be answered in the context of the equipment you actually own.

Instead of starting from scratch every time, FurnaceIQ uses your equipment profile to make future troubleshooting more relevant — filter sizes, model numbers and saved manuals are already there when you need them.

Troubleshoot with context

FurnaceIQ guides you through simple questions and homeowner-safe checks while using the equipment information you've already provided. One question at a time, in plain language.

  • Safe checks only: thermostat, filter, vents, breakers, error codes
  • Never asks you to open panels, wiring, gas or refrigerant components
  • Stops and recommends a licensed technician when the work requires one

Example conversation

My furnace is running but the house isn't getting warm.
Let's start with a few safe checks based on your Lennox SL280. Is the thermostat set to Heat with the target a few degrees above the room temperature?
Yes, set to 72 and the room says 64.
Good. When did you last change the 16x25x1 filter — and does air feel weak at the vents?
Maybe 8 months ago. Air feels weak.
A loaded filter can do exactly this. Swap it and run the system for 30 minutes. If it still won't hold temperature, that's a technician call — I'll put your equipment details and answers into a report.

If FurnaceIQ detects a gas smell, CO concern, burning smell or other hazard, it stops and tells you to shut the equipment down and call a professional.

Don't just call a technician. Give them the information they need.

FurnaceIQ organizes your equipment information, symptoms, answers and relevant photos into a technician-ready summary you can share with a link.

FurnaceIQ Diagnostic Summary

Example

Equipment

Manufacturer
Lennox
Model
SL280UH090V60C
Serial
5921K12345
Type
Gas furnace, upflow
Capacity
88,000 BTU/hr input
Efficiency
80% AFUE

Customer concern

“Furnace runs but doesn't maintain temperature.”

What we found

  • Thermostat calling for heat (set 72°F, ambient 64°F)
  • Furnace starts and completes ignition sequence
  • Blower operates; airflow reported weak at supply registers
  • Filter last changed approx. 8 months ago (16x25x1, MERV 11)

Photos

Rating plate
Furnace
Filter

Safety

No hazard reported. No panels opened; no gas, combustion, refrigerant or live electrical checks performed by the homeowner.

Recommended next step

Replace filter and re-test. If the issue persists, professional HVAC assessment recommended (airflow / heat exchanger inspection).

How FurnaceIQ works

From a photo of your equipment to knowing whether it fits your home — and what to do next.

01

Scan it

Take a photo of your HVAC equipment.

02

Identify it

FurnaceIQ extracts useful equipment information when available.

03

Build your profile

Keep your HVAC equipment information organized.

04

Check your furnace size

Compare your home's estimated heat loss with your furnace's capacity.

05

Diagnose the problem

Answer questions and perform safe homeowner checks.

06

Know your next step

Solve simple issues yourself, or arrive at a technician visit with better information.

Safety first

Built to help homeowners — not replace HVAC professionals

FurnaceIQ sticks to homeowner-safe troubleshooting: thermostat settings, filters, vents, breakers and error codes. Gas, combustion, refrigerant and live electrical work belong to a qualified, licensed professional — and FurnaceIQ says so plainly when that's where a problem leads.

No panel removal

Beyond the filter door, FurnaceIQ never asks you to open equipment.

Immediate hazard stops

Gas smell, CO concerns, smoke or burning odours trigger a stop-and-call response.

Clear boundaries

It tells you which steps are safe for you and which need a technician.

Coming soon

Need a professional?

FurnaceIQ is building a better way to connect homeowners with HVAC technicians — with the equipment information and diagnostic details already prepared.

Start with your equipment

One photo is enough to begin. Free for homeowners.