About Allen Service

Quality First Service Group is a family-owned company that provides plumbing, drain, water heater, and HVAC repair and replacement services. They offer emergency service and guarantee their work with a warranty among the best in the business. The company is BBB accredited, endorsed by Team Dave Logan and Tom Martino referral list, and was a 2018 Colorado Companies to Watch winner. Customers have praised the company's technicians for their professionalism, dedication, and problem-solving skills. The technicians have been described as prompt, knowledgeable, and respectful, taking the time to explain the issues and provide options. They have demonstrated expertise in various tasks, such as installing a new boiler heating system, replacing an A/C and furnace unit, and troubleshooting a tankless water heater. Customers have expressed great satisfaction with the responsiveness and quality of the service provided.

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Reviews for Allen Service

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  • Apr 2026

    20 year old hot water heater started leaking. Gave Allen Service a call and someone was at my home within an hour. Everything was replaced and back working the same day. Easton provided several replacement options and did a great job. Excellent Experience

  • Sep 2025

    Prompt, knowledgeable, professional, and respectful. He explained what needed to be done to repair the problem, prepared a quick estimate that I accepted and performed the repair quickly. It cost a little more than I expected though….but in the long run it is worth it. I would highly recommend him!

  • Sep 2025

    Matt tested the electrical on our hot tub today and within a few minutes was able to diagnose the blower motor as the issue. He was incredibly informed about our next steps and even recommended new motors with accurate voltage to buy.

Hours

Monday: Open 24 hoursTuesday: Open 24 hoursWednesday: Open 24 hoursThursday: Open 24 hoursFriday: Open 24 hoursSaturday: Open 24 hoursSunday: Open 24 hours

Tips

 on-site services accepts credit cards

Location

425 Wilcox St Suite 160, Castle Rock

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