CallataGuidesBusiness phone system for plumbing, heating and air-conditioning contractors in Denver, CO
Plumbing, heating and air-conditioning contractors in the Denver-Aurora-Centennial, CO metro area: 1,183 establishments in 2023, the local area codes, and what phone service costs an 11-person team.
- Establishments
- 1,183CBP 2023
- Employees
- 13,155mid-March 2023
- Per 100k residents
- 38.8U.S. 32.7
- Rank
- 15th of 920areas by count
How many plumbing, heating and air-conditioning contractors are in Denver, CO?
County Business Patterns counts 1,183 plumbing, heating and air-conditioning contractors (NAICS 238220, Plumbing, Heating, and Air-Conditioning Contractors) in the Denver-Aurora-Centennial, CO metro area for 2023. They employed 13,155 people in mid-March and paid $1.0 billion in annual payroll. By establishment count the area is 15th out of 920 areas with published figures for plumbing, heating and air-conditioning contractors.
Measured against its 3.1 million residents (2024 estimate), the area has 38.8 plumbing, heating and air-conditioning contractors per 100,000 people; the U.S. rate is 32.7, so Denver, CO is 18.5% above the national figure. The average establishment here has 11.1 employees, compared with 10.9 nationally. Payroll per employee comes to $76,909, 4.4% above the national $73,693.
| Measure | Denver, CO | Colorado | United States |
|---|---|---|---|
| Establishments | 1,183 | 2,620 | 111,207 |
| Mid-March employees | 13,155 | 24,178 | 1,214,761 |
| Annual payroll | $1,011,737,000 | $1,738,728,000 | $89,519,407,000 |
| Employees per establishment | 11.1 | 9.2 | 10.9 |
| Payroll per employee | $76,909 | $71,914 | $73,693 |
| Establishments per 100,000 residents | 38.8 | 44.0 | 32.7 |
Census County Business Patterns 2023 (mid-March employment; annual payroll). Employees and payroll flagged high-noise are shown but not used in the text. Residents: Census Vintage 2024 estimates.
How big plumbing, heating and air-conditioning contractors in Denver, CO are
Of the plumbing, heating and air-conditioning contractors in Denver, CO that had employees in March 2023, 63.0% had fewer than five (the U.S. share is 58.3%). 79.4% had fewer than ten. Small teams usually share the phone: the person who answers is often also serving a customer or doing the job, which is when calls get missed.
| Employment size | Establishments | Share | U.S. share |
|---|---|---|---|
| 1–4 employees | 745 | 63.0% | 58.3% |
| 5–9 employees | 194 | 16.4% | 18.5% |
| 10–19 employees | 123 | 10.4% | 11.8% |
| 20–49 employees | 74 | 6.3% | 7.5% |
| 50 or more employees | 46 | 3.9% | 3.8% |
Employment-size classes count establishments by mid-March 2023 employment. Establishments with no March employees are excluded from the size classes, so shares are of establishments with employees. Source: Census County Business Patterns 2023.
Calls a plumbing and HVAC contractor in Denver, CO has to catch
Plumbing and HVAC calls are often emergencies: no heat, no cooling or water where it should not be. Homeowners call down a list until someone answers, so a missed call is frequently a lost job.
A few of the calls that come in to plumbing, heating and air-conditioning contractors in Denver, CO:
- The dispatcher calls a customer with a technician's arrival time.
- A homeowner calls because the air conditioning stopped working.
- A tenant calls about a burst pipe.
Texting customers
Contractors text arrival windows, technician names and invoices.
Texts sent from a local business number in Denver, CO have to be registered with carriers first (10DLC); on Callata that is a one-time $49 fee, after which the whole team can text from the shared number.
Phone system pricing for an 11-person plumbing and HVAC contractor
The average plumbing and HVAC contractor in Denver, CO has 11.1 employees, so an 11-person team is a reasonable benchmark. On a per-user plan that headcount sets the bill: $274.45 a month on Ooma Office Pro or $330.00 on RingCentral RingEX Core at list price (checked September 28, 2026). Callata comes to $219.00 a month for 11 users ($99 a month with 5 users included, then $20 per additional user), below both.
Over a year, that is $1,332 less than RingCentral for a plumbing and HVAC contractor in Denver, CO of that size. Annual contracts lower some competitors' prices, so compare the plan you would actually sign.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $219.00 | $2,628.00 |
| Quo (Starter) | $19.00 per user | $209.00 | $2,508.00 |
| Nextiva (Core) | $23.00 per user | $253.00 | $3,036.00 |
| Ooma (Office Pro) | $24.95 per user | $274.45 | $3,293.40 |
| Dialpad (Standard) | $27.00 per user | $297.00 | $3,564.00 |
| RingCentral (RingEX Core) | $30.00 per user | $330.00 | $3,960.00 |
Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.
Local area codes for plumbing, heating and air-conditioning contractors in Denver, CO
NANPA records place the exchanges of the area's named cities and towns in 4 area codes. 303 has the most, with 740 of 1,472 exchanges (50%). A local number lets customers in Denver, CO call without dialing out of area. Callata includes up to 3 local numbers, and which numbers are open in an area code depends on carrier inventory when you choose.
| Area code | Exchanges | Time zone | In service since | Overlay with |
|---|---|---|---|---|
| 303 | 740 | Mountain | 1947 | 720, 983 |
| 720 | 693 | Mountain | 1998 | 303, 983 |
| 983 | 32 | Mountain | 2022 | 303, 720 |
| 719 | 7 | Mountain | 1988 | none |
Exchanges are NANPA-assigned central office codes (NPA-NXX) in the rate centers matched to the area's named places. Source: NANPA utilized code and NPA reports.
What plumbing, heating and air-conditioning contractors in Denver, CO get with Callata
For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.
Porting a number you already use in Denver, CO is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.
AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.
Frequently asked questions
How many plumbing, heating and air-conditioning contractors are there in Denver, CO?
Census County Business Patterns counted 1,183 plumbing, heating and air-conditioning contractors in the Denver-Aurora-Centennial, CO metro area in 2023. They employed 13,155 people in mid-March.
What does a business phone system cost for an 11-person plumbing and HVAC contractor?
At month-to-month list prices checked September 28, 2026, 11 users cost $330.00 a month on RingCentral RingEX Core and $274.45 on Ooma Office Pro. On Callata, $99 a month with 5 users included, then $20 per additional user, the same team pays $219.00.
What area code should a plumbing and HVAC contractor in Denver, CO use?
Area code 303 has the most assigned exchanges among the area's named places, followed by 720 and 983. If you already have a local number, you can port it to Callata for free.
Can an AI receptionist answer calls for a plumbing and HVAC contractor?
Yes. Callata's optional AI agents can answer when the team is busy or closed, take a message, text, email or transfer the call. They disclose that they are AI and are billed from prepaid AI minutes at $0.25 per minute.