| Bates Sanitation & Asphalt | 2189 303rd Ave Fort Madison, IA 52627-9715 | (319) 372-7838 |
| Beane Steves Plumbing Co | PO Box 3406 Sioux City, IA 51102 | (712) 239-3100 |
| Beaver Creek Heating & Cooling | 406 N Madison St Wellsburg, IA 50680-7786 | (641) 869-3506 |
| Becker Hardware Inc | 101 W Main St Ossian, IA 52161-7702 | (563) 532-9120 |
| Beebe Plumbing & Heating | 26 5th St N Dakota City, IA 50529-5049 | (515) 332-1610 |
| Beebe Plumbing & Heating | 403 2nd Ave S Dakota City, IA 50529 | (515) 332-7919 |
| Beenken Plumbing Heating & Air Conditioning | 705 2nd Ave Sw Clarion, IA 50525-1325 | (515) 532-6430 |
| Behle, Inc | 2210 229th Pl Ames, IA 50014 | (515) 598-5279 |
| Bemer Richard O | 510 S Brewer St Manchester, IA 52057-2201 | (563) 927-2988 |
| Benjamin Franklin PLMG | 107 N Locust St Winfield, IA 52659-9525 | (319) 257-3717 |
| Benjamin Franklin Plumbing | 3535 Industrial Av Marion, IA 52302 | (319) 373-2524 |
| Bergman Brian Plumbing & Heating | 1024 Goldsmith St Stratford, IA 50249 | (515) 838-2551 |
| Bergman Plumbing | 2021 6th Ave S Fort Dodge, IA 50501-4301 | (515) 576-1149 |
| Bergmann Rod Plumbing & Heating | 209 S Main St PO Box 415 Tripoli, IA 50676-0415 | (319) 984-5376 |
| Bergmann Ron Plumbing & Heating Corp | 209 S Main St Tripoli, IA 50676-7711 | (319) 882-3302 |
| Bjelland Plumbing Inc | 2634 Dillon Rd Marshalltown, IA 50158 | (641) 479-2625 |
| BJK Pump & Gas Co | 384 W 3rd St Newell, IA 50568-7637 | (712) 272-3317 |
| Bjornstad's Advanced Comfort | 207 10th St Sw Spencer, IA 51301-5626 | (712) 262-5794 |
| Black Plumbing & Heating | 212 E Main St Clarinda, IA 51632-2256 | (712) 542-4289 |
| Black Plumbing & Heating | 221 7th St NE Mason City, IA 50401 | (641) 424-6332 |
| Black Plumbing Heating | 421 Main St Bedford, IA 50833-1321 | (712) 523-2075 |
| Blue Cobra Sewer & Drain | 810 Riverside Drive Waterloo, IA 50703-5554 | (319) 233-6380 |
| Boche Plumbing & Heating Inc | 1010 E 9th St Muscatine, IA 52761 | (563) 264-8934 |
| Bogardus Plumbing Co | 20 S 19th St Ste B Council Bluffs, IA 51501-3711 | (712) 322-6874 |
| Bonnesen Plumbing | 121 620th St Aurelia, IA 51005-8021 | (712) 434-5325 |
