ClimaScore turns real technician measurements into a single 0–100 score — calibrated to your climate, explained in plain English, and delivered through licensed HVAC companies.
Your HVAC system quietly decides your comfort, your energy bill, and one of your biggest repair risks. ClimaScore condenses its true condition into a score anyone can understand.
Real field measurements are distilled into one clear number — so "how is my system doing?" finally has an answer anyone can understand.
The same reading can be healthy in Miami and a warning sign in Boston. ClimaScore judges every measurement against your region's climate profile.
Every result comes with plain-English explanations of what helped, what hurt, and what to do next — no jargon required.
A technician from a licensed ClimaScore company captures live performance readings and condition details from your system during a routine visit.
The proprietary ClimaScore engine evaluates every reading against what "healthy" means for your climate zone and computes your score.
You get your score, your risk band, and clear explanations — delivered through your HVAC company's portal or app, with history you can track visit after visit.
ClimaScore looks at your system the way a great technician does — live performance, condition, and history together. How each factor is weighted, curved, and adjusted for your climate is the proprietary heart of the engine.
Every U.S. state is mapped to a climate zone with its own definition of healthy performance. Your system is judged against what "healthy" means where you live — not a national average.
Heavy cooling loads and humidity demand strong latent performance.
Extreme sensible heat with dry air changes what "healthy" looks like.
Heating-dominant climates are judged by their own standards.
Every ClimaScore lands in one of five risk bands — from amber to green, just like the gauge — so the next step is always obvious.
Immediate attention recommended.
Significant issues affecting health.
Working, but with room to improve.
Healthy — keep up the maintenance.
Performing at its best for your climate.
ClimaScore is Zul Spot proprietary technology, licensed to HVAC companies through a simple JSON API. Create your company account, receive your API key, and start scoring your customers' systems under your own brand.
// Send your technician's field readings… { "api_key": "••••••••••••", "readings": { "…" } } // …get back a scored, explained result. { "score": 87, "band": "GOOD", "explanations": [ "…" ] } // Full API documentation is provided // to licensed companies only.
A visit from a licensed ClimaScore company. During a routine inspection or tune-up, their technician captures the live measurements the engine needs — click "Get your ClimaScore" to see the licensed companies near you.
ClimaScore™ is proprietary technology owned by Zul Spot. HVAC companies don't build their own version — they license the same engine through the ClimaScore API, so a score means the same thing no matter which licensed company delivers it.
No — it's a health assessment. It tells you how your system is performing for your climate and where the risk is building, so you can act before something breaks. Repairs and diagnostics are still done by a licensed technician.
Ideal operating ranges genuinely differ by region. A temperature split that's perfect for a humid Florida summer would be graded differently in a cold northern climate. ClimaScore maps every state to a climate profile so your score reflects where you actually live.
Regular care is part of the score itself — recent, consistent maintenance supports a stronger result. A score at every seasonal tune-up keeps your history meaningful and catches decline early.
Create a company account with Zul Spot. Once approved, your company receives its own tenant API key with usage limits, and gets listed in the licensed-company directory on this page.
Your home already has a ClimaScore — you just haven't seen it yet.