Best Estimating Software for HVAC Contractors: Flat Rate and Proposals

“Estimating software” means two different things in HVAC, and mixing them up is how contractors end up paying for the wrong tool.

• Service and repair estimates happen in the field, in minutes, usually at a flat rate from a price book: “Replacing that capacitor is $X.”
• Replacement and install proposals happen at the kitchen table: equipment options, accessories, labor, permits, financing and a signature.

Some tools do one well, some do both. This guide compares the options using the features and prices each vendor publishes on its official website as of October 19, 2026.

(Load calculation software that sizes equipment, such as Manual J tools, is a different category and isn’t covered here.)

Part 1: flat-rate pricing for repairs

Why flat rate wins in residential HVAC

With time-and-materials billing, a slow technician earns the company more than a fast one, and customers don’t know the price until the end. Flat rate fixes both: the price is agreed before work starts, and the company’s margin is built into each task.

The hard part is building the price book. Every task needs a parts list, an average time, your real labor cost per hour, a share of overhead and your margin. A useful price book for a residential HVAC shop can contain hundreds of tasks.

Option A: build it in your field service software

Housecall Pro includes a price book on every plan and flat-rate pricing from Essentials ($189/month billed monthly, $149/month billed annually, 5 users). FieldEdge includes a flat-rate pricebook on all plans. ServiceTitan includes its pricebook in every tier. Workiz has a price book on all plans and lists flat rate in Ultimate.

If you know your numbers, this is the cheapest route: no extra subscription, and estimates turn into jobs and invoices in the same system. Use our job quote calculator to check that each flat rate covers labor, parts, overhead and margin before you load it.

Option B: buy ready-made content with Profit Rhino

Profit Rhino sells flat-rate pricing content you then adjust to your costs. Its SmartPrice Starter plan lists a flat-rate pricebook, custom option templates, service agreements, financing and a QuickBooks export. According to Profit Rhino’s website, Housecall Pro has launched a price book powered by Profit Rhino.

As of October 19, 2026, Profit Rhino’s SmartPrice pricing page lists Starter at $39, Plus at $49 and Pro at $59 per technician per month, plus an HVAC light commercial content add-on at $69 per month per company. Every plan carries the note “Success coaching & implementation required,” which is a one-time cost on top: the individual plan pages showed different per-technician prices and implementation fees when we checked, so ask for a written quote that lists both before you decide.

For a three-technician shop on Starter, the subscription alone is 3 × $39 = $117 a month.

Profit Rhino makes sense when you’d rather pay to skip months of building and testing prices. If you already have a price book you trust, you probably don’t need it.

A worked example: building one flat rate

Here’s how one price-book task comes together, with made-up numbers. Use your own costs, not these.

Say a capacitor replacement takes your technicians 45 minutes on average including diagnosis, the part costs you $25, and an hour of technician time costs you $45 (wage plus payroll taxes and benefits). You add 50% markup on parts, 30% overhead on direct costs, and you want a 40% margin on the price.

• Labor: 0.75 h × $45 = $33.75
• Part at cost: $25.00, billed with markup at $37.50
• Overhead: 30% × ($33.75 + $25.00) = $17.63
• Price before margin: $33.75 + $37.50 + $17.63 = $88.88
• Price with a 40% margin: $88.88 ÷ 0.60 = $148.13

You’d probably round it to $149. The job quote calculator does exactly this math, shows the real margin and lets you test what happens if the job takes 90 minutes instead of 45. Repeat for your 30 most common repairs and you have the core of a price book.

Two warnings: your overhead and margin percentages should come from your own numbers (the hourly rate calculator helps), and flat rates need a review at least once a year as part and labor costs change.

Part 2: proposals for replacements

A replacement proposal should do four things:

1. Present options (good, better, best), each with a clear list of what’s included.
2. Show a monthly payment next to each option when the customer finances.
3. Let the customer approve and sign on the spot, ideally with a deposit.
4. Turn into an install job with the right equipment and labor, without retyping.

FieldEdge: the most complete for proposals

FieldEdge’s Proposal Pro add-on is described on its pricing page as offering “good, better, best, and budget options.” Combined with the flat-rate pricebook and service agreements included on all plans, FieldEdge covers repair and replacement estimating in one system. Two drawbacks: Proposal Pro is an add-on with “call for pricing,” and FieldEdge doesn’t offer a free trial.

Housecall Pro: financing built into every plan

Housecall Pro’s pricing page lists consumer financing on every plan, so you can show a monthly payment while you quote. It doesn’t describe a dedicated good-better-best proposal builder on the pricing page, so during the 14-day trial, check how you would present three replacement options on one estimate.

Jobber: optional line items on Grow

Jobber’s quotes are quick to build from a phone, and customers can approve them online. On the Grow plan ($299/month for 5 users, $229/month billed annually), optional line items let the customer add or remove extras, which works for simple upsells (a better thermostat, a surge protector, a maintenance plan). Jobber doesn’t list a flat-rate pricebook on its pricing page.

Workiz: sales proposals in Ultimate

Workiz lists sales proposals together with flat rate, service plans and equipment tracking in its Ultimate plan. Prices are on request, with a 7-day free trial.

How to pick

If you…	Look at
Already know your prices and want one system	The price book in your field service software (Housecall Pro Essentials, FieldEdge, ServiceTitan)
Don’t have a price book and want to start fast	Profit Rhino, then load it into your field service software
Sell many replacements and want three-option proposals	FieldEdge with Proposal Pro; test Housecall Pro and Workiz Ultimate
Mostly do simple quotes with a few extras	Jobber Grow

Who this guide is for (and who it isn’t)

For: residential HVAC contractors who want faster, more consistent repair prices and replacement proposals that close more often.

Not for: commercial mechanical contractors estimating construction bids from drawings, which need takeoff and bid software.

The bottom line

Separate the two problems. For repairs, a flat-rate price book is the goal, built in your field service software or bought from Profit Rhino. For replacements, you want options, financing and a signature in one place, which FieldEdge (Proposal Pro) and Housecall Pro handle best among the tools with clear information on their pricing pages. Check every flat rate against your real costs before you load it, and confirm current prices on each vendor’s website: the figures here are from the official pages on October 19, 2026.