# About Roomwise

> How we work: mini split installation, replacement and service for Washington, DC houses and condos, room by room, with a written plan and a DC permit.

URL: https://roomwisedcminisplits.com/about/

About

Mini splits for Washington houses built before air conditioning, planned one room at a time.

(771) 213-3105

A room that never gets comfortable, a window unit you'd like gone, a radiator house with no ducts? At [Roomwise DC Mini Splits](https://roomwisedcminisplits.com/) we plan and install mini splits across Washington, DC. Here is what we take on, how a job runs and how to reach us.

## What do we work on?

Ductless and ducted mini-split heat pumps: one room or the whole house, new systems and replacements, and the repair and maintenance that keep them running.

- [Single-zone installation](https://roomwisedcminisplits.com/single-zone-mini-split-installation/)
- [Multi-zone installation](https://roomwisedcminisplits.com/multi-zone-mini-split-installation/)
- [Whole-house system](https://roomwisedcminisplits.com/whole-house-mini-split/)
- [Replacement](https://roomwisedcminisplits.com/mini-split-replacement/)
- [Repair](https://roomwisedcminisplits.com/mini-split-repair/)
- [Maintenance](https://roomwisedcminisplits.com/mini-split-maintenance/)

## How do we plan a system?

Room by room. On the first visit we measure the rooms that aren't working, check the panel, and look at the walls for line routes and a spot for the outdoor unit. The written plan shows each head, the line route, the drain path and the price.

## The standards we work to

- **A heat-load calculation for every room.** Each head is sized from a calculation for the room it serves, at the District’s 21°F heating and 92°F cooling design days.
- **The manufacturer’s installation manual.** Line length limits, flare torque, clearances and the charge for each system follow the manual for that equipment.
- **Pressure test and deep vacuum.** Every line set is pressure-tested and pulled into a deep vacuum before any refrigerant is released.
- **A DC mechanical permit on every install.** Pulled through the DC Department of Buildings, with Historic Preservation Office review where the house is in a historic district.
- **DC’s noise limit.** Outdoor units are placed to stay under 60 dB(A) at the property line (20 DCMR 2801).

## How do we price a job?

Every house gets its own written estimate after the visit. The price follows the line routes, where the outdoor unit can go, the panel, the number and type of heads, and any historic or building review. Our typical ranges are in the [DC cost guide](https://roomwisedcminisplits.com/guide/mini-split-installation-cost-washington-dc/), and where a system qualifies, the DCSEU rebate can come off the invoice. The [terms](https://roomwisedcminisplits.com/terms/) set out how the work is arranged.

## Where do we work?

All of Washington, DC. The [service areas](https://roomwisedcminisplits.com/service-areas/) page covers the neighborhoods where historic review and lot size change the plan.

## How do you reach us?

Call [(771) 213-3105](tel:+17712133105) during business hours (Mon-Fri 8am-6pm, Sat-Sun 9am-2pm), or send the form at the bottom of this page. Tell us which rooms aren't working and roughly where the house is.

## How a job runs

### First call

You tell us which rooms, when they're uncomfortable, and what heats and cools the house now.

### Home visit

We measure the rooms, check your panel, and look at the walls for line routes and a spot for the outdoor unit.

### Written plan

Head locations, the line route, the drain plan and a price, in writing.

### Install and startup

Mount, route, pressure-test, vacuum, start each head and walk you through the controls.

## Ask about your house

(771) 213-3105