A little clarity.

Yes. Create a free account to get 10 questions total. No credit card. An account is required to ask any question.

Ask about HVAC troubleshooting, system sizing, equipment details, and building codes. Text, voice, photo and specialist tools depend on your plan.

Yes. Building-code lookups work in text chat and voice calls. Include your city, state and code edition, if known. Voice is included with Plus and Professional. Verify requirements with your local building department before acting.

First-time subscribers get 7 days free on any paid plan. We collect your card when you start a paid plan but don't charge it until the trial ends. Creating a free account never starts a trial or requires a card.

Anytime, in Settings → Manage Subscription. Cancel before the trial ends to avoid a charge. Otherwise you keep access through the period you have paid for.

Paid plans renew automatically each month or year. Annual plans are charged once a year. Your first charge happens when the 7-day trial ends, unless you cancel before then. Returning subscribers who have used their trial are charged when they subscribe.

Email tom@procalcs.net within 7 days of your first charge to request a full refund, with no usage limit.

Later charges and requests after the 7-day window are non-refundable except where required by law. Cancel anytime to stop the next charge.

Choose a plan on the pricing page. Create your account and verify your email, then continue directly to Stripe checkout. Already subscribed? Manage your plan in your account.

By text on every plan. Voice comes with Plus and Professional. Camera diagnosis comes with Plus and up.

Built by working HVAC pros at ProCalcs.

No ads and no advertising trackers. We use first-party account and usage data to operate the service.

Ask Your HVAC Pro gives guidance, not an inspection. For gas, electrical, or safety issues, call a licensed tech.